Properties of the Number 77994

Seventy-Seven Thousand Nine Hundred Ninety-Four

Basics

Value: 77993 → 77994 → 77995

Parity: even

Prime: No

Previous Prime: 77983

Next Prime: 77999

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ² × 7 × 619

Divisors: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000010101010

Octal: 230252

Duodecimal: 39176

Hexadecimal: 130aa

Square: 6083064036

Square Root: 279.2740589456887

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

Let s denote the sum of the abundant numbers in the aliquot parts of x. Sequence lists numbers·such that σ(s) = usigma(x), where usigma(x) is the sum of the unitary divisors of x (A034448). A258135

a(n) is the number of domino towers of height n consisting of 2·n bricks, a(n) = A333650(2·n, n). A339346

Numbers k such that F(k)*F(k+1) + F(k+2) is a prime, where F = A000045 (Fibonacci numbers). A305414

G.f. A(x) satisfies: [xⁿ] A(x)ⁿ⁺¹ = [xⁿ] (1 + x·A(x)^2·n+3)ⁿ⁺¹ for n >= 0. A360347

Duplicate of A077843. A77994

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