Properties of the Number 87730

Eighty-Seven Thousand Seven Hundred Thirty

Basics

Value: 87729 → 87730 → 87731

Parity: even

Prime: No

Previous Prime: 87721

Next Prime: 87739

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 31 × 283

Divisors: 1, 2, 5, 10, 31, 62, 155, 283, 310, 566

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10101011010110010

Octal: 253262

Duodecimal: 4292A

Hexadecimal: 156b2

Square: 7696552900

Square Root: 296.1925049693189

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

Numbers that are the sum of five fourth powers in exactly four ways. A344355

Numbers that are the sum of five fourth powers in four or more ways. A344354

Numerator of Euler(n, 2/7). A156193

E.g.f.: (sin(2·x) + sin(5·x)) / sin(7·x). A273032

Number of n X 7 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A303524

Number of 5Xn 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A303528

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A303525

Values of j for A087651 and A087732. A87730