Properties of the Number 1326

One Thousand Three Hundred Twenty-Six

Basics

Value: 1325 → 1326 → 1327

Parity: even

Prime: No

Previous Prime: 1321

Next Prime: 1327

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 13 × 17

Divisors: 1, 2, 3, 6, 13, 17, 26, 34, 39, 51

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10100101110

Octal: 2456

Duodecimal: 926

Hexadecimal: 52e

Square: 1758276

Square Root: 36.41428291206625

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

Triangular numbers: a(n) = binomial(n+1,2) = n*(n+1)/2 = 0 + 1 + 2 + ... + n. A217

Hexagonal numbers: a(n) = n*(2·n-1). A384

Products of exactly four distinct primes. A46386

a(n) = binomial(n,2): number of size-2 subsets of {0,1,...,n} that contain no consecutive integers. A161680

a(n) = a(n-1) + a(n-5); a(0) = ... = a(4) = 1. A3520

a(n) = n*(n+5). A28557

Multiples of 13 containing a 13 in their decimal representation. A121033

a(n) = n·ceiling(n/2). A93005

Numbers that are divisible by exactly four different primes. A33993

a(n) = denominator(Bernoulli_n+1(x) - Bernoulli_n+1). A195441