Properties of the Number 108

One Hundred Eight

Basics

Value: 107 → 108 → 109

Parity: even

Prime: No

Previous Prime: 107

Next Prime: 109

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101100

Octal: 154

Duodecimal: 90

Hexadecimal: 6c

Square: 11664

Square Root: 10.392304845413264

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

The nonnegative even numbers: a(n) = 2n. A5843

Numbers that are not squarefree. Numbers that are divisible by a square greater than 1. The complement of A005117. A13929

Powerful numbers, definition (1): if a prime p divides n then p² must also divide n (also called squareful, square full, square-full or 2-powerful numbers). A1694

Sum of proper divisors (or aliquot parts) of n: sum of divisors of n that are less than n. A1065

The Doudna sequence: write n-1 in binary; power of prime(k) in a(n) is # of 1's that are followed by k-1 0's. A5940

Abundant numbers (sum of divisors of m exceeds 2m). A5101

Dedekind ψ function: n * ∏_{p∣n, p prime} (1 + 1/p). A1615

Average of twin prime pairs. A14574

3-smooth numbers: numbers of the form 2ⁱ*3^j with i, j >= 0. A3586

a(n) = prime(n) - 1. A6093

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