Properties of the Number 15939

Fifteen Thousand Nine Hundred Thirty-Nine

Basics

Value: 15938 → 15939 → 15940

Parity: odd

Prime: No

Previous Prime: 15937

Next Prime: 15959

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 11 × 23

Divisors: 1, 3, 7, 9, 11, 21, 23, 33, 63, 69

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111001000011

Octal: 37103

Duodecimal: 9283

Hexadecimal: 3e43

Square: 254051721

Square Root: 126.24975247500488

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 rotationally symmetric polyominoes with n cells (that is, polyominoes with exactly the symmetry group C₂ generated by a 180-degree rotation). A6747

Powers of cube root of 14 rounded to nearest integer. A18016

Powers of cube root of 14 rounded down. A18015

3 times 12-gonal (or dodecagonal) numbers: a(n) = 3·n*(5·n-4). A153448

Values of·such that x² + y² = 29ⁿ with·and y coprime and 0 < x < y. A230644

Number of partitions of n in SPM(n): these are the partitions obtained from (n) by iteration of the following transformation: p -> p' if p' is a partition (i.e., decreasing) and p' is obtained from p by removing a unit from the i-th component of p and adding one to the (i+1)-th component, for any i. A56219

a(n) = n*(n + 5)*(n + 10)*(n + 15)/24. A264446

Number of independent components for a Weyl tensor in n dimensions. A52472

Fifth column of the (1,4)-Pascal triangle A095666. A95667

Numerators of triangle T(n,k), n>=0, 0<=k<=n, read by rows: T(n,k) is the coefficient of x^2k+1 in polynomial u_n(x), used to approximate x->sin(π*x)/π. A144846