Properties of the Number 13280

Thirteen Thousand Two Hundred Eighty

Basics

Value: 13279 → 13280 → 13281

Parity: even

Prime: No

Previous Prime: 13267

Next Prime: 13291

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁵ × 5 × 83

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11001111100000

Octal: 31740

Duodecimal: 7828

Hexadecimal: 33e0

Square: 176358400

Square Root: 115.23888232710347

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

Number of partitions into a square number of parts. A89333

a(n) = sum of all divisors of all positive integers <= prime(n). A244583

Numbers m such that the GCD of the x's that satisfy σ(x) = m is 3. A241648

Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape Y; triangle T(n,k), n>=0, read by rows. A247712

Least common multiple of prime(n)-3 and prime(n)+3. A166011

Combined weight, as defined at A244094, of the distinct-parts partitions of n. A234924

Numbers n with property that n² is a sum of some 70 successive primes. A166256

1-sequence of reduction of (n²) by x² -> x+1. A192255

Mirror of the triangle A193955. A193956

Number of 9-length words w over n-ary alphabet such that for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z. A213288