Properties of the Number 28361

Twenty-Eight Thousand Three Hundred Sixty-One

Basics

Value: 28360 → 28361 → 28362

Parity: odd

Prime: No

Previous Prime: 28351

Next Prime: 28387

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 79 × 359

Divisors: 1, 79, 359, 28361

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 110111011001001

Octal: 67311

Duodecimal: 144B5

Hexadecimal: 6ec9

Square: 804346321

Square Root: 168.40724449975423

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

Numbers k such that the coefficient of x^k in the expansion of ∏_j>=1 (1 - x^j)⁵ is zero. A302057

Number of 5-element subsets of [n] whose sum is a triangular number. A320851

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}. A150321

Number of planar n X n X n binary triangular grids with no more than 4 ones in any similarly oriented 5 X 5 X 5 subtriangle. A153566

n such that the sum of digit !! of n equals the sum of d∣n, 1<d<n. A202242

Number of totally isotropic spaces of index n in orthogonal geometry of dimension 2n. A28361