Properties of the Number 72891

Seventy-Two Thousand Eight Hundred Ninety-One

Basics

Value: 72890 → 72891 → 72892

Parity: odd

Prime: No

Previous Prime: 72889

Next Prime: 72893

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 13 × 89

Divisors: 1, 3, 7, 9, 13, 21, 39, 63, 89, 91

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110010111011

Octal: 216273

Duodecimal: 36223

Hexadecimal: 11cbb

Square: 5313097881

Square Root: 269.9833328188983

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

a(n) = 81·n² - 9. A157909

Numbers n such that n+/-2 and n²+/-2 are all primes. A189051

The larger companion to the deficient numbers in A212608. A212609

Molien series for 3-D group R4. A37243

The 5-cycle of the n => σ(n)-n process, where σ(n) is the sum of divisors of n (A000203). A72891