218923 (number)
218,923 (two hundred eighteen thousand nine hundred twentythree) is an odd sixdigits prime number following 218922 and preceding 218924. In scientific notation, it is written as 2.18923 × 10^{5}. The sum of its digits is 25. It has a total of 1 prime factor and 2 positive divisors. There are 218,922 positive integers (up to 218923) that are relatively prime to 218923.
Basic properties
 Is Prime? Yes
 Number parity Odd
 Number length 6
 Sum of Digits 25
 Digital Root 7
Name
Short name  218 thousand 923 

Full name  two hundred eighteen thousand nine hundred twentythree 
Notation
Scientific notation  2.18923 × 10^{5} 

Engineering notation  218.923 × 10^{3} 
Prime Factorization of 218923
Prime Factorization 218923
Prime numberω(n)  Distinct Factors  1  Total number of distinct prime factors 

Ω(n)  Total Factors  1  Total number of prime factors 
rad(n)  Radical  218923  Product of the distinct prime numbers 
λ(n)  Liouville Lambda  1  Returns the parity of Ω(n), such that λ(n) = (1)^{Ω(n)} 
μ(n)  Mobius Mu  1  Returns:

Λ(n)  Mangoldt function  12.2964753488  Returns log(p) if n is a power p^{k} of any prime p (for any k >= 1), else returns 0 
The prime factorization of 218,923 is 218923. Since it has a total of 1 prime factor, 218,923 is a prime number.
Divisors of 218923
2 divisors
τ(n)  Total Divisors  2  Total number of the positive divisors of n 

σ(n)  Sum of Divisors  218924  Sum of all the positive divisors of n 
s(n)  Aliquot Sum  1  Sum of the proper positive divisors of n 
A(n)  Arithmetic Mean  109462  Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) 
G(n)  Geometric Mean  467.89208157437  Returns the nth root of the product of n divisors 
H(n)  Harmonic Mean  1.9999908644096  Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors 
The number 218,923 can be divided by 2 positive divisors (out of which 0 are even, and 2 are odd). The sum of these divisors (counting 218,923) is 218,924, the average is 109,462.
Other Arithmetic Functions (n = 218923)
φ(n)  Euler Totient  218922  Total number of positive integers not greater than n that are coprime to n 

λ(n)  Carmichael Lambda  218922  Smallest positive number such that a^{λ(n)} ≡ 1 (mod n) for all a coprime to n 
π(n)  Prime Pi  ≈ 19475  Total number of primes less than or equal to n 
r_{2}(n)  Sum of 2 squares  0  The number of ways n can be represented as the sum of 2 squares 
There are 218,922 positive integers (less than 218,923) that are coprime with 218,923. And there are approximately 19,475 prime numbers less than or equal to 218,923.
Divisibility of 218923
m  2  3  4  5  6  7  8  9 

n mod m  1  1  3  3  1  5  3  7 
218,923 is not divisible by any number less than or equal to 9.
Classification of 218923
By Arithmetic functions
 Arithmetic
 Prime
 Deficient
Expressible via specific sums
 Polite
 Nonhypotenuse
By Powers
 Prime Power
 Square Free
Base conversion (218923)
Base  System  Value 

2  Binary  110101011100101011 
3  Ternary  102010022021 
4  Quaternary  311130223 
5  Quinary  24001143 
6  Senary  4405311 
8  Octal  653453 
10  Decimal  218923 
12  Duodecimal  a6837 
16  Hexadecimal  3572b 
20  Vigesimal  17763 
36  Base36  4ox7 
Basic calculations (n = 218923)
Multiplication
n×yn×2  437846 

n×3  656769 
n×4  875692 
n×5  1094615 
Division
n÷yn÷2  109461.500 

n÷3  72974.333 
n÷4  54730.750 
n÷5  43784.600 
Exponentiation
n^{y}n^{2}  47927279929 

n^{3}  10492383903896467 
n^{4}  2297024161392726245041 
n^{5}  502871420484579807743110843 
Nth Root
^{y}√n^{2}√n  467.89208157437 

^{3}√n  60.269436404106 
^{4}√n  21.630813243481 
^{5}√n  11.696563371906 
218923 as geometric shapes
Circle
Radius = nDiameter  437846 

Circumference  1375533.7770037 
Area  150567990531.49 
Sphere
Radius = nVolume  4.39503949215E+16 

Surface area  602271962125.95 
Circumference  1375533.7770037 
Square
Length = nPerimeter  875692 

Area  47927279929 
Diagonal  309603.87571541 
Cube
Length = nSurface area  287563679574 

Volume  10492383903896467 
Space diagonal  379185.7589454 
Equilateral Triangle
Length = nPerimeter  656769 

Area  20753120976.401 
Altitude  189592.8794727 
Triangular Pyramid
Length = nSurface area  83012483905.604 

Volume  1.236539301543E+15 
Height  178749.88098644 
Cryptographic Hash Functions
md5  3c043dc2efd47489f9e20aa6b4709338 

sha1  029dd2a8bdb715a24953bc4259d23fc3417dbff5 
sha256  86a299bcde044b12ee78b74d52e16824d5f5a40b6846887bc87379f249ff0cf6 
sha512  93798b2de902f22aa250ece8b56797010bdd205508740bdce103cb12f43f9c61275f6f2c8d0c00819c8299405292a88c12773a32ee3cf6e15067b968b9f2f370 
ripemd160  a9b40a4186f1de67c00a5d3594aefb4f0110e07c 