Properties of the Number 20769

Twenty Thousand Seven Hundred Sixty-Nine

Basics

Value: 20768 → 20769 → 20770

Parity: odd

Prime: No

Previous Prime: 20759

Next Prime: 20771

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 23 × 43

Divisors: 1, 3, 7, 21, 23, 43, 69, 129, 161, 301

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000100100001

Octal: 50441

Duodecimal: 10029

Hexadecimal: 5121

Square: 431351361

Square Root: 144.11453778158537

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

Number of compositions of n with equal differences up to sign. A325557

Numbers k such that k and k+1 have 4 distinct prime factors. A140078

Numbers k such that the k-th composition in standard order is an alternating permutation of {1..k} for some k. A349051

Odd composite integers m such that A014448(m) == 4 (mod m). A335670

Numbers k such that k and k+1 each have at least 4 distinct prime factors. A321504

Numbers k such that k and 2·k, taken together are pandigital. A115922

Numbers k such that k and k+1 are the product of exactly four distinct primes. A318896

Number of n-dimensional partitions of 5. A8779

Numbers k such that k and 5·k, taken together, are pandigital. A115925

Denominators of rationals with e.g.f. D(4,x), a Debye function. A227574