Properties of the Number 20289

Twenty Thousand Two Hundred Eighty-Nine

Basics

Value: 20288 → 20289 → 20290

Parity: odd

Prime: No

Previous Prime: 20287

Next Prime: 20297

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 6763

Divisors: 1, 3, 6763, 20289

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111101000001

Octal: 47501

Duodecimal: B8A9

Hexadecimal: 4f41

Square: 411643521

Square Root: 142.43946082459033

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

Numbers k such that A064602(k) is divisible by k. A64605

Strong pseudoprimes to base 63. A20289

Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. A300338