Properties of the Number 15280

Fifteen Thousand Two Hundred Eighty

Basics

Value: 15279 → 15280 → 15281

Parity: even

Prime: No

Previous Prime: 15277

Next Prime: 15287

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 5 × 191

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11101110110000

Octal: 35660

Duodecimal: 8A14

Hexadecimal: 3bb0

Square: 233478400

Square Root: 123.61229712289955

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 subsets of {1..n} containing n such that some element can be written as a positive linear combination of the others. A365042

Number of pairs of integer partitions of n where every part of the first is less than every part of the second. A322440

a(0) = 10; for n > 0, a(n) is determined by the rule that the concatenation of the leading terms of the difference triangle is the same as the concatenation of the digits of the sequence. A125588

Sum of numbers in the n-th antidiagonal of the reciprocity array of 0. A259574

a(n) = A273059(4n+2). A275918

a(n) = a(n-1) + a(n-3) unless a(n-1) and a(n-3) are both even in which case a(n) = (a(n-1) + a(n-3))/2, with a(0) = a(1) = a(2) = 1. A341312

Number of pairs of functions f, g from a size n set into itself satisfying f(g(x)) = f(f(g(x))). A239781

Triangle T(n,k): the coefficient of [tⁿ] [x^k] of 2ⁿ⁺⁵ *n! *exp(t*(1+t)*x) / (3+exp(t*(1+t))). A178603

Number of 4-step self-avoiding walks on an n X n square summed over all starting positions. A188149

Numbers k such that 3^k + 100 is prime. A219618