Properties of the Number 12818

Twelve Thousand Eight Hundred Eighteen

Basics

Value: 12817 → 12818 → 12819

Parity: even

Prime: No

Previous Prime: 12809

Next Prime: 12821

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 13 × 17 × 29

Divisors: 1, 2, 13, 17, 26, 29, 34, 58, 221, 377

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001000010010

Octal: 31022

Duodecimal: 7502

Hexadecimal: 3212

Square: 164301124

Square Root: 113.21660655575224

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

Sum of the squared parts of the partitions of n into exactly two parts. A226141

a(n) = 2nd elementary symmetric function of the first n+1 odd positive integers. A24196

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every element next to itself plus and minus one within the range 0..3 horizontally, vertically or antidiagonally, with no adjacent elements equal. A232391

Number of degree n products of distinct cyclotomic polynomials. A280611

Number of enriched p-trees of weight n with odd leaves. A300355

Numbers k such that k | sigma₆(k). A55710

Number of permutations of [n] whose cycle maxima sum to 2n. A368678

a(n) = smallest k having at least three prime divisors d such that (d + n) | (k + n). A202158

Vandermonde sequence using x² + y² applied to the first n primes. A203707

Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|=w+|y-z|. A212685