Properties of the Number 18736

Eighteen Thousand Seven Hundred Thirty-Six

Basics

Value: 18735 → 18736 → 18737

Parity: even

Prime: No

Previous Prime: 18731

Next Prime: 18743

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ⁴ × 1171

Divisors: 1, 2, 4, 8, 16, 1171, 2342, 4684, 9368, 18736

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100100110000

Octal: 44460

Duodecimal: AA14

Hexadecimal: 4930

Square: 351037696

Square Root: 136.87950905814938

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 unoriented colorings of the 24 octahedral facets (or 24 vertices) of the 4-D 24-cell using subsets of a set of n colors. A338949

a(n) = 11ⁿ + 8ⁿ - 1. A155665

Sum T(n,k) of the entries in the k-th cycles of all permutations of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows. A285439

Let f(n) = exp(π*sqrt(n)); sequence gives numbers n such that f(n) - floor(f(n)) < 1/10³. A127028

a(n) = prime(n)² - n. A182174

Principal diagonal of the convolution array A213781. A213782

Smallest m such that A064672(m) = n. A64689

a(n) = A045820(n)/2. A45822

σ(n) values in A115920. A216372

Number of nX3 0..1 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope. A223587