Properties of the Number 15880

Fifteen Thousand Eight Hundred Eighty

Basics

Value: 15879 → 15880 → 15881

Parity: even

Prime: No

Previous Prime: 15877

Next Prime: 15881

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 5 × 397

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 397, 794

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: 11111000001000

Octal: 37010

Duodecimal: 9234

Hexadecimal: 3e08

Square: 252174400

Square Root: 126.01587201618692

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 stacks, or planar partitions of n; also number of weakly unimodal compositions of n. A1523

Number of normal patterns contiguously matched by integer partitions of n. A335838

Even heptagonal numbers (A000566). A14640

Number of integer partitions of n in which the even parts appear as often at even positions as at odd positions. A300787

Bisection of A001523. A100506

Triangle of sums of the first k n-th powers multiplied by binomial(n,k), read by rows. A215078

Numerators of continued fraction convergents to sqrt(176). A41324

Let f(x)=(largest digit of x)^{smallest digit of x} + x (A097385). Sequence gives numbers n such that f(n) and f(n+1) are both prime. A97387

a(n) = n*(10·n-3). A195018

Solution of the complementary equation a(n) = 2·a(n-1) - a(n-2) + b(n-1) + n, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences. A294872