Properties of the Number 71878

Seventy-One Thousand Eight Hundred Seventy-Eight

Basics

Value: 71877 → 71878 → 71879

Parity: even

Prime: No

Previous Prime: 71867

Next Prime: 71879

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 83 × 433

Divisors: 1, 2, 83, 166, 433, 866, 35939, 71878

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100011000110

Octal: 214306

Duodecimal: 3571A

Hexadecimal: 118c6

Square: 5166446884

Square Root: 268.100727339558

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) is the number of tetrapods standing on the four edges of an n X n grid, so that no two feet are the same distance apart and no foot is on a corner. Tetrapods with congruent footprints are counted only once. A353447

G.f. D(x) satisfies: D(x) = (1 + x·D(x))*(1 + 2·x*D(x))*(1 + 3·x*D(x)). A71878

a(n) is the least k that starts a sequence of exactly n numbers on which i + ω(i) is constant, where ω = A001222 (this is BigOmega). A369228

Number of nX4 0..1 arrays with no element less than a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors. A231511