Properties of the Number 13266

Thirteen Thousand Two Hundred Sixty-Six

Basics

Value: 13265 → 13266 → 13267

Parity: even

Prime: No

Previous Prime: 13259

Next Prime: 13267

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 11 × 67

Divisors: 1, 2, 3, 6, 9, 11, 18, 22, 33, 66

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001111010010

Octal: 31722

Duodecimal: 7816

Hexadecimal: 33d2

Square: 175986756

Square Root: 115.17812292271479

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

Stirling1 transform of Catalan numbers: ∑_k=0..n Stirling1(n,k)*binomial(2·k,k)/(k+1). A86672

Integers k such that all the digits needed to write the consecutive nonnegative integers from 0 to k fill exactly a square (no holes, no overlaps). A158022

23-gonal numbers: a(n) = n(21n-19)/2. A51875

Number of inequivalent binary [ n,3 ] codes of dimension <= 3 without zero columns. A34337

Numbers m such that 18·m + 1, 36·m + 1, 108·m + 1, and 162·m + 1 are all primes. A372188

Group successively larger prime numbers so that the sum of the n-th group is a multiple of n. Sequence gives the group sum divided by n for the n-th group. A74131

Partial sums of A084263. A84570

Row sums of A163233 and A163235. A163242

Number of 4-orbits of the cyclic group C₄ for a bi-colored square n X n grid with n squares of one color. A276452

Expansion of 1 / ((1 - x)⁷*(1 + x)²). A299335