Properties of the Number 28165

Twenty-Eight Thousand One Hundred Sixty-Five

Basics

Value: 28164 → 28165 → 28166

Parity: odd

Prime: No

Previous Prime: 28163

Next Prime: 28181

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 43 × 131

Divisors: 1, 5, 43, 131, 215, 655, 5633, 28165

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111000000101

Octal: 67005

Duodecimal: 14371

Hexadecimal: 6e05

Square: 793267225

Square Root: 167.82431289893606

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 of n into parts not of the form 21k, 21k+2 or 21k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 9 are greater than 1. A35980

Expansion of 1/((1-5x)*(1-6x)*(1-7x)*(1-8x)). A28165