Properties of the Number 87940

Eighty-Seven Thousand Nine Hundred Forty

Basics

Value: 87939 → 87940 → 87941

Parity: even

Prime: No

Previous Prime: 87931

Next Prime: 87943

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 4397

Divisors: 1, 2, 4, 5, 10, 20, 4397, 8794, 17588, 21985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101011110000100

Octal: 253604

Duodecimal: 42A84

Hexadecimal: 15784

Square: 7733443600

Square Root: 296.54679226051326

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

Column 1 of triangle A118032, where column 1 of the matrix square of A118032 forms a bisection of this sequence. A118034

Least k > 0 such that gcd(kⁿ + 8, (k+1)ⁿ + 8) > 1, or 0 if there is no such k. A255858

Column 1 of triangle A118040, which is the matrix square of triangle A118032; also equals a bisection of A118034, which is column 1 of A118032. A118042

Expansion of (theta₃(z)*theta₃(23z) + theta₂(z)*theta₂(23z))⁵. A328093

a(n) = ∑_k=0..n binomial(n+(-1)^k, k). A87940