Properties of the Number 18108

Eighteen Thousand One Hundred Eight

Basics

Value: 18107 → 18108 → 18109

Parity: even

Prime: No

Previous Prime: 18097

Next Prime: 18119

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 503

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 503

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011010111100

Octal: 43274

Duodecimal: A590

Hexadecimal: 46bc

Square: 327899664

Square Root: 134.56596895203484

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

Triangle of coefficients of certain polynomials used with prime numbers as variables in the computation of the array A103728. A103718

a(n) = n!*(1 + ∑_i=1..n 1/i). A774

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero. A302069

a(n) = n*(14·n - 1). A195024

Number of partitions of n-th triangular number (A000217) into distinct triangular parts. A288126

a(n) = 3·2*1 + 6·5*4 + 9·8*7 + 12·11·10 + ... + (up to the n-th term). A319867

a(n) is the concatenation of n and 6n. A9440

Difference of the first two Stirling numbers of the first kind. A81046

Irregular triangle read by rows: T(n,k) is the number of n-permutations whose third-longest cycle has length exactly k; n >= 0, 0 <= k <= floor(n/3). A350015

Irregular triangle read by rows: T(n,k) is the number of n-permutations whose third-shortest cycle has length exactly k; n >= 0, 0 <= k <= max(0,n-2). A350016