Properties of the Number 72256

Seventy-Two Thousand Two Hundred Fifty-Six

Basics

Value: 72255 → 72256 → 72257

Parity: even

Prime: No

Previous Prime: 72253

Next Prime: 72269

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁶ × 1129

Divisors: 1, 2, 4, 8, 16, 32, 64, 1129, 2258, 4516

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001101001000000

Octal: 215100

Duodecimal: 35994

Hexadecimal: 11a40

Square: 5220929536

Square Root: 268.80476186258306

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 minimal coprime labelings for the complete bipartite graph K_n,n. A213806

Number of isomorphism classes of smooth toric Fano n-folds (or, equivalently, regular Fano n-topes). A140296

a(n) = ∑_k=0..n (k+1) * binomial(2·k+1,2·n-2·k). A391891

Numbers k such that (σ(k) - k)^σ(k - k) == k (mod σ(k)), where σ = A000203. A375790

a(n) = 10·a(n-1) - a(n-2) for n > 1, a(0) = a(1) = 1. A72256