Properties of the Number 18336

Eighteen Thousand Three Hundred Thirty-Six

Basics

Value: 18335 → 18336 → 18337

Parity: even

Prime: No

Previous Prime: 18329

Next Prime: 18341

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ⁵ × 3 × 191

Divisors: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100011110100000

Octal: 43640

Duodecimal: A740

Hexadecimal: 47a0

Square: 336208896

Square Root: 135.41048703848605

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

Triangular numbers (A000217) with prime indices. A34953

Numbers n such that n¹⁰²⁴ + 1 is prime (a generalized Fermat prime). A57002

Arrays of dumbbells. A2889

T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three exactly once. A269186

Let G_n denote the planar graph defined in A358746 with the addition, if n is odd, of the circle containing the initial n points; sequence gives the number of regions in G_n. A370976

a(1)=1, a(2)=2; for n >= 2, a(n+1) = a(n) + sum of prime factors of a(n). A96461

Triangular numbers T from A000217 such that (4·T+1)/5 is prime. A207339

Number of partitions p of n such that the multiplicity of (min(p) + max(p))/2 is a part. A240497

Triangle read by rows: T(n,k) = number of arrangements of k non-attacking bishops on the white squares of an n X n board with every square controlled by at least one bishop (1<=k<n). A288182

Triangle read by rows: T(n,k) = number of arrangements of k non-attacking bishops on the black squares of an n X n board with every square controlled by at least one bishop. A288183