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Properties of the Number 15996

Fifteen Thousand Nine Hundred Ninety-Six

Basics

Value: 15995 → 15996 → 15997

Parity: even

Prime: No

Previous Prime: 15991

Next Prime: 16001

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 2 × 3 × 31 × 43

Divisors: 1, 2, 3, 4, 6, 12, 31, 43, 62, 86

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11111001111100

Octal: 37174

Duodecimal: 9310

Hexadecimal: 3e7c

Square: 255872016

Square Root: 126.47529403009902

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

Row sums of triangle A049029. A49120
θ series of A2[hole]4. A33690
Convolution triangle, read by rows, where diagonals are successive self-convolutions of A118346. A118349
Denominators a(n) of Pythagorean approximations b(n)/a(n) to 4/5. A195580
Number of ways to choose three distinct points from a 5 X n grid so that they form an isosceles triangle. A271915
Numerators b(n) of Pythagorean approximations b(n)/a(n) to 5/4. A195566
Low-temperature susceptibility expansion for honeycomb net (Potts model, q=3). A57391
Number of compositions of n such that the first part is 1 and the second differences of the parts are in {-1,0,1}. A239551
Pisot sequence T(7,10), a(n) = floor(a(n-1)2/a(n-2)). A20752
a(n) is the number of nonsymmetric patterns (no reflective, nor rotational symmetry) which may be formed by an equilateral triangular arrangement of closely packed black and white cells satisfying the local matching rule of Pascal's triangle modulo 2, where n is the number of cells in each edge of the arrangement. The matching rule is such that any elementary top-down triangle of three neighboring cells in the arrangement contains either one or three white cells. A60551