Properties of the Number 20712

Twenty Thousand Seven Hundred Twelve

Basics

Value: 20711 → 20712 → 20713

Parity: even

Prime: No

Previous Prime: 20707

Next Prime: 20717

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 863

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 863, 1726

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000011101000

Octal: 50350

Duodecimal: BBA0

Hexadecimal: 50e8

Square: 428986944

Square Root: 143.91664254004817

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 nonzero 8th powers. A3390

Number of partitions of n containing a clique of size 1. A183558

Numbers that are the sum of 8 positive 9th powers. A3397

a(n) = prime(n)*prime(n-1) + 1. A23523

Numbers k such that σ(k+1) divides σ(k), where σ(k) is the sum of positive divisors of k. A58073

Numbers k such that the average of the divisors of k and k+1 is the same. A238380

Numbers k such that σ(k) = 2*σ(k+1). A163193

a(n) = 36·n² - n. A157286

Sum of terms in n-th row of A077164. A77167

a(n) = 1728·n - 24. A157287