Properties of the Number 28587

Twenty-Eight Thousand Five Hundred Eighty-Seven

Basics

Value: 28586 → 28587 → 28588

Parity: odd

Prime: No

Previous Prime: 28579

Next Prime: 28591

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 13 × 733

Divisors: 1, 3, 13, 39, 733, 2199, 9529, 28587

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110111110101011

Octal: 67653

Duodecimal: 14663

Hexadecimal: 6fab

Square: 817216569

Square Root: 169.07690557849702

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) = n*(n³ + 2). A185065

Numbers m such that 20·m + 1, 80·m + 1, 100·m + 1, and 200·m + 1 are all primes. A372186

a(n) = sum of n-th column in array in A100452. A100454

a(n) = 169·n² + 2·n. A158220

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 13. A31691

Quadruples (a,b,c,d) of the form ( n*(n³-1), n³-1, 2·n³+1, n*(n³+2) ). A204767

Expansion of (theta₃(z)*theta₃(5z)+theta₂(z)*theta₂(5z))². A28587