Properties of the Number 81229

Eighty-One Thousand Two Hundred Twenty-Nine

Basics

Value: 81228 → 81229 → 81230

Parity: odd

Prime: No

Previous Prime: 81223

Next Prime: 81233

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 29 × 2801

Divisors: 1, 29, 2801, 81229

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110101001101

Octal: 236515

Duodecimal: 3B011

Hexadecimal: 13d4d

Square: 6598150441

Square Root: 285.0070174574654

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

Composite numbers having the same digits as their prime factors (with multiplicity), excluding zero digits. A176670

Minimal order of degree-n irreducible polynomials over GF(7). A218358

The Wiener index of the graph obtained by applying Mycielski's construction to a benzenoid consisting of a linear chain of n hexagons. A228597

Smallest number with reciprocal of period length n in base 7. A381494

a(n) is the sum of the common digits of n and the n-th prime in base 10, or -1 if there are no common digits. A81229