Properties of the Number 72990

Seventy-Two Thousand Nine Hundred Ninety

Basics

Value: 72989 → 72990 → 72991

Parity: even

Prime: No

Previous Prime: 72977

Next Prime: 72997

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 5 × 811

Divisors: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10001110100011110

Octal: 216436

Duodecimal: 362A6

Hexadecimal: 11d1e

Square: 5327540100

Square Root: 270.16661525806626

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

Self-convolution square-root of A169961, where A169961(n) = binomial(12·n,n). A384695

a(2) = 1000, a(n) = 18 - n for 3 <= n <= 9, a(n) = 8 for n >= 10. A72990