Properties of the Number 81328

Eighty-One Thousand Three Hundred Twenty-Eight

Basics

Value: 81327 → 81328 → 81329

Parity: even

Prime: No

Previous Prime: 81307

Next Prime: 81331

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 13 × 17 × 23

Divisors: 1, 2, 4, 8, 13, 16, 17, 23, 26, 34

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110110110000

Octal: 236660

Duodecimal: 3B094

Hexadecimal: 13db0

Square: 6614243584

Square Root: 285.18064450449646

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

G.f. satisfies A(x) = (1 + x) * (1 - x·A(x)²). A364371

Eighth column of (1,5)-Pascal triangle A096940. A96945

Sequence used for the Boas-Buck type recurrence for Riordan triangle A319203. A319204

Greatest 3-smooth number m such that n-m is also 3-smooth, a(n)=0 if no such 3-smooth number exists. A81328