Properties of the Number 18256

Eighteen Thousand Two Hundred Fifty-Six

Basics

Value: 18255 → 18256 → 18257

Parity: even

Prime: No

Previous Prime: 18253

Next Prime: 18257

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 7 × 163

Divisors: 1, 2, 4, 7, 8, 14, 16, 28, 56, 112

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011101010000

Octal: 43520

Duodecimal: A694

Hexadecimal: 4750

Square: 333281536

Square Root: 135.11476603243628

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

Sinh(x) / cos(x) = ∑_n>=0 a(n)*x²ⁿ⁺¹/(2n+1)!. A2084

Expansion of e.g.f. exp(x)/cos(x). A3701

Triangle T(n,k) read by rows, where e.g.f. for T(n,k) is exp((1+y)*x)/(1-x). A73107

Positive integers n such that (n+84)³ - n³ is a square. A263949

Boustrophedon transform of n mod 2. A62161

E.g.f. (exp(x) - 1)/cos(x). A380053

Monotonic ordering of set S generated by these rules: if·and y are in S then x²+y²-xy is in S, and 2 is in S. A192533

a(n) = (n!/6) * ∑_k=0..n-3 1/k!. A357479

a(n) = ∑_k=1..n (-1)^k-1 * binomial(k+3,4) * floor(n/k). A366939

Expansion of (1 + x)² / ((1 - x)²*(1 + 2·x + 2·x²)²). A322040