Properties of the Number 18308

Eighteen Thousand Three Hundred Eight

Basics

Value: 18307 → 18308 → 18309

Parity: even

Prime: No

Previous Prime: 18307

Next Prime: 18311

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 23 × 199

Divisors: 1, 2, 4, 23, 46, 92, 199, 398, 796, 4577

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011110000100

Octal: 43604

Duodecimal: A718

Hexadecimal: 4784

Square: 335182864

Square Root: 135.30705820466278

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

T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements. A251201

Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-14-3, and 4-5-3-1-2. A363810

Molien series for group G_1,2⁸ of order 1536. A51462

A213784/12. A213789

Number of (n+1) X (1+1) 0..1 arrays with no 2 X 2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements. A251194

Least k such that 10ⁿ + k - 1 is the first of a pair of twin primes. A103129

Number of permutations of 1..n containing the relative rank sequence { 246315 } at any spacing. A159158

Normalized total height of all nodes in all rooted trees with n labeled nodes. A435

Number of nX6 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s. A297312

Divisors of 154. A18308