Properties of the Number -20

Twenty

Basics

Value: -21 → -20 → -19

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 2

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5

Divisors: 1, 2, 4, 5, 10, 20

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: Yes

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10100

Octal: -24

Duodecimal: -18

Hexadecimal: -14

Square: 400

Square Root: 4.47213595499958

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

No sequences found.