Properties of the Number 13180

Thirteen Thousand One Hundred Eighty

Basics

Value: 13179 → 13180 → 13181

Parity: even

Prime: No

Previous Prime: 13177

Next Prime: 13183

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 659

Divisors: 1, 2, 4, 5, 10, 20, 659, 1318, 2636, 3295

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001101111100

Octal: 31574

Duodecimal: 7764

Hexadecimal: 337c

Square: 173712400

Square Root: 114.80418110852932

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

a(n) = T(n,0) + T(n,1) + ... + T(n,n), T given by A026519. A26531

Triangle T(m,k) read by rows, where T(m,k) is the number of ways in which 1<=k<=m positions can be picked in an m X m square grid such that the picked positions have a point symmetry or a line symmetry. A292153

a(n) = ∑_j=0..n T(n, j), where T is given by A026552. A26564

Number of Fibonacci parts in the last section of the set of partitions of n. A144117

Expansion of φ(-x⁶) / f(-x) in powers of·where φ(), f() are Ramanujan θ functions. A271661

Number of partitions of n into parts 3k+1 and 3k+2 with at least one part of each type. A35620

Number of 8-element subsets of {1, 2, ..., n} having pairwise coprime elements. A186984

Number of integer partitions of 2n with exactly n distinct sums of nonempty submultisets. A365660

Sums of rows of the triangle in A116366. A116367

Interprimes which are of the form s·prime, s=20. A75295