Properties of the Number 81324

Eighty-One Thousand Three Hundred Twenty-Four

Basics

Value: 81323 → 81324 → 81325

Parity: even

Prime: No

Previous Prime: 81307

Next Prime: 81331

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ⁴ × 251

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110110101100

Octal: 236654

Duodecimal: 3B090

Hexadecimal: 13dac

Square: 6613592976

Square Root: 285.17363131958746

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

Numbers m such that φ(m) = τ(m)³. A68559

E.g.f. satisfies A(x) = 1 + A(x)³ * log(1 + x·A(x)). A367157

a(n) = ((9+sqrt(3))ⁿ + (9-sqrt(3))ⁿ)/2. A152056

Number of ways of placing n nonattacking range-3 leprechauns on an n X n board. A343905

Twice a square but not the sum of 2 distinct squares. A81324