Properties of the Number 20969

Twenty Thousand Nine Hundred Sixty-Nine

Basics

Value: 20968 → 20969 → 20970

Parity: odd

Prime: No

Previous Prime: 20963

Next Prime: 20981

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 13 × 1613

Divisors: 1, 13, 1613, 20969

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000111101001

Octal: 50751

Duodecimal: 10175

Hexadecimal: 51e9

Square: 439698961

Square Root: 144.80676779764127

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) = n * (10·n² - 6n + 1) = n·A087348(n). A104099

Expansion of 1/((1-7·x)*(1-8·x)*(1-12·x)). A20969