Properties of the Number 15690

Fifteen Thousand Six Hundred Ninety

Basics

Value: 15689 → 15690 → 15691

Parity: even

Prime: No

Previous Prime: 15683

Next Prime: 15727

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 523

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 523, 1046

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11110101001010

Octal: 36512

Duodecimal: 90B6

Hexadecimal: 3d4a

Square: 246176100

Square Root: 125.25973016097392

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) = 1ⁿ + 2ⁿ + 5ⁿ. A74501

Numbers that are the sum of 3 nonzero 6th powers. A3359

Sum of distinct nonzero sixth powers. A194769

a(n) = floor(sqrt(a(n-1)² + a(n-2)²)), a(1)=100, a(2)=300. A104908

a(n) = ∑_k=0..n (-1)^n-k*C(n,k)*σ(n,k) for n>0 with a(0)=1. A163191

Let σ*_m (n) be result of applying sum of anti-divisors m times to n; call n (m,k)-anti-perfect if σ*_m (n) = k·n; sequence gives the (2,k)-anti-perfect numbers. A229860

Number of colored compositions of n using all colors of a 2-set such that all parts have different color patterns and the patterns for parts i are sorted and have i colors in (weakly) increasing order. A327841

Number of edges in a Farey fan of order n. A360043

Numbers that are the sum of at most 3 nonzero 6th powers. A4854

Number of polyenes with 2n carbon atoms. A135527