Properties of the Number 18244

Eighteen Thousand Two Hundred Forty-Four

Basics

Value: 18243 → 18244 → 18245

Parity: even

Prime: No

Previous Prime: 18233

Next Prime: 18251

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 4561

Divisors: 1, 2, 4, 4561, 9122, 18244

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011101000100

Octal: 43504

Duodecimal: A684

Hexadecimal: 4744

Square: 332843536

Square Root: 135.07035203922436

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 partitions p of n such that (number of even numbers in p) < 2*(number of odd numbers in p). A241641

Coefficient array of numerator polynomials of o.g.f.s (rising powers) for the columns of triangle A008517 (second-order Eulerian numbers). A112692

Members of 3-cycles of permutation A111273. A113701

a(n) = ∑_{k=0..floor(n/6)} (-1)^k * binomial(n-3·k,3·k). A348308

a(n) = ∑_k=1..n k³ * n^k. A368527

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 90 ones. A31858

a(n) = n² + (n + 1)³ + (n + 2)⁴ + (n + 3)⁵. A61224

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 326", based on the 5-celled von Neumann neighborhood. A271261

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 643", based on the 5-celled von Neumann neighborhood. A273314

A self-generating sequence: there are a(n) (k+1)'s between successive k's, where k=3. A18244