Properties of the Number 28858

Twenty-Eight Thousand Eight Hundred Fifty-Eight

Basics

Value: 28857 → 28858 → 28859

Parity: even

Prime: No

Previous Prime: 28843

Next Prime: 28859

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 × 47 × 307

Divisors: 1, 2, 47, 94, 307, 614, 14429, 28858

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000010111010

Octal: 70272

Duodecimal: 1484A

Hexadecimal: 70ba

Square: 832784164

Square Root: 169.87642567466506

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

Number of integer partitions of n whose odd parts are relatively prime. A366850

Number of integer partitions of n whose LCM is greater than n. A327779

a(0) = 0, a(1) = 1. For n >= 2, a(n) = a(n-1)/(n-1) if n-1 divides a(n-1); otherwise, a(n) = a(n-1) + a(n-2). A343376

Values of·in solutions (x,y,z) to the Diophantine equation x³-x²+y³-y²=z³-z², with 1<x<y<z. A138667

a(0)=a(1)=a(2)=0; thereafter a(n) = n·a(n-1) + n·a(n-2)/(n-2) + (-1)^n-1*4/(n-2). A186638

Inverse of number-theoretic triangle A109974. A109977

Expansion of ∑_k>=1 prime(k)*x^prime(k)/(1 - x^prime(k)) * ∏_k>=1 1/(1 - x^prime(k)). A276560

a(n) = Sum(Sum p_i, {Sum p_i=prime(n)}, p_i is prime). A120484

Number of ways to place 8n nonattacking kings on a 16·2n chessboard. A174558

a(n+3) = floor( ( a(n) + 2·a(n+1) + 3·a(n+2) )/4 ), with a(0), a(1), a(2) equal to 0, 1, 2. A74732