Properties of the Number 320

Three Hundred Twenty

Basics

Value: 319 → 320 → 321

Parity: even

Prime: No

Previous Prime: 317

Next Prime: 331

Digit Sum: 5

Digital Root: 5

Palindrome: No

Factorization: 2 ⁶ × 5

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101000000

Octal: 500

Duodecimal: 228

Hexadecimal: 140

Square: 102400

Square Root: 17.88854381999832

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

Moser-de Bruijn sequence: sums of distinct powers of 4. A695

Number of partitions of n that do not contain 1 as a part. A2865

Numbers in base 4. A7090

Integers written in factorial base. A7623

Number of ways of writing n as a sum of 4 squares; also θ series of four-dimensional cubic lattice Z⁴. A118

a(n) is the number of partitions of n into at most 3 parts; also partitions of n+3 in which the greatest part is 3; also number of unlabeled multigraphs with 3 nodes and n edges. A1399

Numbers that are the sum of 2 successive primes. A1043

n written in primorial base. A49345

Numbers whose prime indices are inseparable. A335448

Numbers k that divide the (right) concatenation of all numbers <= k written in base 25 (most significant digit on left). A29470

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