Properties of the Number 20716

Twenty Thousand Seven Hundred Sixteen

Basics

Value: 20715 → 20716 → 20717

Parity: even

Prime: No

Previous Prime: 20707

Next Prime: 20717

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5179

Divisors: 1, 2, 4, 5179, 10358, 20716

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000011101100

Octal: 50354

Duodecimal: BBA4

Hexadecimal: 50ec

Square: 429152656

Square Root: 143.93053880257656

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

Sum of 12 positive 9th powers. A4801

Integers k such that 10^k - 27 is prime. A108329

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 96 ones. A31864

a(n) is the maximum value of the quartet index of a bifurcating rooted tree with n leaves. A300445

Pisot sequences E(6,8), P(6,8). A20716

Number of nX4 0..1 arrays with each 1 adjacent to 2, 3 or 5 king-move neighboring 1s. A296959