Properties of the Number 28172

Twenty-Eight Thousand One Hundred Seventy-Two

Basics

Value: 28171 → 28172 → 28173

Parity: even

Prime: No

Previous Prime: 28163

Next Prime: 28181

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 7043

Divisors: 1, 2, 4, 7043, 14086, 28172

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111000001100

Octal: 67014

Duodecimal: 14378

Hexadecimal: 6e0c

Square: 793661584

Square Root: 167.84516674602222

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

Structured disdyakis triacontahedral numbers (vertex structure 11). A100158

Number of cyclic subgroups of the group GL(2, Z(n)), counting conjugates as distinct. A316560

Number of length n+5 0..1 arrays with no three disjoint pairs in any consecutive six terms having the same sum. A248441

E.g.f. satisfies A(x) = (1 + (exp(x) - 1) * A(x))². A377716

Least number k such that product{(k² + h)/(k² - h), h = 1..k} - e < 1/n. A247985

Expansion of 1/((1-5x)(1-6x)(1-8x)(1-11x)). A28172