Properties of the Number 28257

Twenty-Eight Thousand Two Hundred Fifty-Seven

Basics

Value: 28256 → 28257 → 28258

Parity: odd

Prime: No

Previous Prime: 28229

Next Prime: 28277

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 9419

Divisors: 1, 3, 9419, 28257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111001100001

Octal: 67141

Duodecimal: 14429

Hexadecimal: 6e61

Square: 798458049

Square Root: 168.09818559401526

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 singular 2 X 2 matrices having all elements in {-n,...,n}. A209981

a(n) = T(n, n-5), array T as in A055818. A55822

Expansion of g.f. A(x) satisfying x = ∑_n=-oo..+oo (-1)ⁿ * xⁿ * A(x)ⁿ * (A(x)ⁿ + xⁿ)ⁿ. A361775

Expansion of ∏_k>=1 (1 + k·x^k)/(1 + 2·x^k). A269154

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 377", based on the 5-celled von Neumann neighborhood. A271463

Engel expansion of sqrt(3). A28257

Number of nX5 nonnegative integer arrays each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it). A202546

Number of nX5 nonnegative integer arrays each row and column an ascent sequence (interior element no greater than one plus up-steps preceding it) and the lower right element equal to min(n,5)-1. A202732