Properties of the Number 81888

Eighty-One Thousand Eight Hundred Eighty-Eight

Basics

Value: 81887 → 81888 → 81889

Parity: even

Prime: No

Previous Prime: 81883

Next Prime: 81899

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 2 ⁵ × 3 × 853

Divisors: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111111100000

Octal: 237740

Duodecimal: 3B480

Hexadecimal: 13fe0

Square: 6705644544

Square Root: 286.16079396031876

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

Number of integer partitions of n where the parts have lesser mean than the distinct parts. A360251

a(n) contains n digits (either '1' or '8') and is divisible by 2ⁿ. A53376

a(n) = 5·2ⁿ - 2·n - 4. A97809

Number of n-node rooted trees of height at most 8. A34825

Numbers having four 8's in base 10. A43524

G.f. A(x) satisfies: A(x) = A(x³) / (1 - x - x² - x³). A393316

G.f.: A(x) = 1 + x*(1 + x*(1 + x*(...(1 + x*(...)²ⁿ)...)⁶)⁴)². A138212

Numbers n such that the least positive primitive root of n is larger than the value for all positive numbers smaller than n. A81888