Properties of the Number 20182

Twenty Thousand One Hundred Eighty-Two

Basics

Value: 20181 → 20182 → 20183

Parity: even

Prime: No

Previous Prime: 20177

Next Prime: 20183

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 10091

Divisors: 1, 2, 10091, 20182

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111011010110

Octal: 47326

Duodecimal: B81A

Hexadecimal: 4ed6

Square: 407313124

Square Root: 142.06336614342206

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 (1/3)*max(p) is a part of p. A363066

a(n) = 961·n + 1. A158414

Numbers k for which 10k + 1, 10k + 3, 10k + 7, 10k + 9 and 10k + 13 are primes. A178084

a(0) = a(1) = 1; a(n) = [xⁿ] ∏_k=1..n-1 1/(1 - x^a(k))^a(k). A293807

Composite numbers k such that k-A238525(k) and k+A238525(k) are prime. A342648

O.g.f. A(x) satisfies: [xⁿ] exp( n*(n-1)*x ) / A(x)^n-1 = 0 for n > 0. A393618

Pseudoprimes to base 54. A20182