Properties of the Number -87075

Eighty-Seven Thousand Seventy-Five

Basics

Value: -87076 → -87075 → -87074

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 5 ² × 43

Divisors: 1, 3, 5, 9, 15, 25, 27, 43, 45, 75

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -10101010000100011

Octal: -252043

Duodecimal: -42483

Hexadecimal: -15423

Square: 7582055625

Square Root: 295.08473359359004

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

Reversion of g.f. for Fibonacci numbers 1, 1, 2, 3, 5, .... A7440

Excess of the number of even Motzkin n-paths (A107587) over the odd ones (A343386). A343773

G.f. A(x) satisfies: 2ⁿ - 1 = ∑_k=0..n [x^k]A(x)ⁿ and also satisfies: (2+z)ⁿ - (1+z)ⁿ + zⁿ = ∑_k=0..n [x^k](A(x)+z·x)ⁿ for all z, where [x^k]A(x)ⁿ denotes the coefficient of x^k in A(x)ⁿ. A100223

Numbers that are the sum of six fourth powers in seven or more ways. A345564

Numbers that are the sum of six fourth powers in exactly seven ways. A345819

a(-1) = 1 and g.f. A(x) satisfies A(x) - 1/A(x) = 1/x - 1. A214649

Card-matching numbers (Dinner-Diner matching numbers). A59062

Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y>=3z. A212515

a(n) = (2·n-1)*(2·n+1)². A102094

Card-matching numbers (Dinner-Diner matching numbers). A59066