Properties of the Number 13978

Thirteen Thousand Nine Hundred Seventy-Eight

Basics

Value: 13977 → 13978 → 13979

Parity: even

Prime: No

Previous Prime: 13967

Next Prime: 13997

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 29 × 241

Divisors: 1, 2, 29, 58, 241, 482, 6989, 13978

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11011010011010

Octal: 33232

Duodecimal: 810A

Hexadecimal: 369a

Square: 195384484

Square Root: 118.2285921425101

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

Bernoulli number B_n has denominator 354. A255684

Number of representations of n as a sum of products of distinct pairs of positive integers, considered to be equivalent when terms or factors are reordered. A211856

Number of ordered quintuples of distinct pairwise coprime positive integers with largest element n. A186976

Quadruples of different integers from [ 1,n ] with no common factors between pairs. A15623

Numbers that are partial sums of the reverses of the sequence of primes and are reverses of primes. A381245

Quadruples of different integers from [ 2,n ] with no common factors between pairs. A15628

Triangle read by rows: T(n,k) = T(n-1,k-1) + k²*T(n-1,k), 1 < k <= n, T(n,1) = 1. A36969

Triangle read by rows: T(n,k) is the number of permutations of [n] with k alternating runs (n>=2, k>=1). A59427

Triangle of scaled central factorial numbers, T(n,k) = A008958(n,n-k). A160562

Triangle read by rows: T(n,k) is the number of permutations of [n] with k increasing runs of length at least 2. A8971