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Properties of the Number 30900

Thirty Thousand Nine Hundred

Basics

Value: 30899 → 30900 → 30901

Parity: even

Prime: No

Previous Prime: 30893

Next Prime: 30911

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 2 × 3 × 5 2 × 103

Divisors: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 111100010110100

Octal: 74264

Duodecimal: 15A70

Hexadecimal: 78b4

Square: 954810000

Square Root: 175.78395831246945

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of "connected animals" formed from n 4-gon or 6-gon connected truncated octahedra in the b.c.c. lattice, allowing translation and rotations of the lattice and reflections. A38181
Antichains (or order ideals) in the poset 2·2*2·n or size of the distributive lattice J(2·2*2·n). A56932
T(n,k)=Number of length n+2 0..k arrays with some pair in every consecutive three terms totalling exactly k. A245869
a(n) is the decimal concatenation of n and n2. A53061
Antichains (or order ideals) in the poset 2·2*6·n or size of the distributive lattice J(2·2*6·n). A56933
Integer floor of coefficients of exp(x·A(x)). A85022
Number of arrangements of 4 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero. A189500
Number of length n+2 0..5 arrays with some pair in every consecutive three terms totalling exactly 5. A245866
Number of length 6+2 0..n arrays with some pair in every consecutive three terms totalling exactly n. A245875
Exponential (2,3)-perfect numbers: numbers m such that esigma(esigma(m)) = 3m, where esigma(m) is the sum of exponential divisors of m (A051377). A328132