Properties of the Number 18522

Eighteen Thousand Five Hundred Twenty-Two

Basics

Value: 18521 → 18522 → 18523

Parity: even

Prime: No

Previous Prime: 18521

Next Prime: 18523

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 7 ³

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100001011010

Octal: 44132

Duodecimal: A876

Hexadecimal: 485a

Square: 343064484

Square Root: 136.09555466656508

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

a(n) = 2·n³. A33431

Triangle of numbers related to A000330 (sum of squares) and A000364 (Euler numbers). A60058

Numbers of the form p³*q³*r where p, q, and r are prime. A179688

Dirichlet g.f.: ∏_k>=2 1 / (1 - k^-s)^k³. A343283

Numbers k such that sopfr(k)=τ(k). A78511

Number of partitions of n such that (greatest part) - (least part) <= number of parts. A237831

a(n) = [xⁿ] (1/(1 + x/(1 + x²/(1 + x³/(1 + x⁴/(1 + x⁵/(1 + ...)))))))ⁿ, a continued fraction. A291651

Number of (w,x,y) with all terms in {0,...,n} and max(w,x,y) < 2·min(w,x,y). A213389

Third column of triangle A060058. A60060

Numbers with at least two 3s in their prime signature. A109399