Properties of the Number 30856

Thirty Thousand Eight Hundred Fifty-Six

Basics

Value: 30855 → 30856 → 30857

Parity: even

Prime: No

Previous Prime: 30853

Next Prime: 30859

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 7 × 19 × 29

Divisors: 1, 2, 4, 7, 8, 14, 19, 28, 29, 38

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

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Representations

Binary: 111100010001000

Octal: 74210

Duodecimal: 15A34

Hexadecimal: 7888

Square: 952092736

Square Root: 175.6587601003719

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

Sum of the first n even squares: a(n) = 2·n*(n+1)*(2·n+1)/3. A2492

Array read by antidiagonals: A(n,k) is the number of n element multisets of n element multisets of a k-set. A331436

Number of orbits of the wreath product of S_n with S_n on n X n matrices over {0,1,2,3,4,5}. A99124

a(n) = A000292(A000292(n)). A140236

The least nonsquarefree number on row n of Pascal's triangle, or 1 if all the terms on that row are squarefree. A249716

Partial sums of A255745. A255766

Least k such that prime(n) is the smallest prime p for which k² + p² is also prime, or 0 if none. A263466

Binomial coefficients C(n,55). A17719

Greedy-summable tetrahedral numbers. A242291

Expansion of x/(1 - 7·x - 9·x²). A15566