Properties of the Number 28513

Twenty-Eight Thousand Five Hundred Thirteen

Basics

Value: 28512 → 28513 → 28514

Parity: odd

Prime: Yes

Previous Prime: 28499

Next Prime: 28517

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 28513

Divisors: 1, 28513

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111101100001

Octal: 67541

Duodecimal: 14601

Hexadecimal: 6f61

Square: 812991169

Square Root: 168.8579284487406

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

Primes that are the difference of two Fibonacci numbers; primes in A007298. A113188

a(n) = sum of n Fibonacci numbers starting from F(n). A96140

Compound filter: a(n) = P(σ(n), σ(2n)), where P(n,k) is sequence A000027 used as a pairing function, and σ is the sum of divisors (A000203). A286359

Primes in A301916 but not in A045318. A320481

a(n) = ∑_{k=floor((n+1)/2)..n} Fibonacci(k+1). A129361

a(n) = 22·n² + 1. A158537

Primes p such that p == 1 (mod A001414(p-1)) and p == 1 (mod A001414(p+1)). A339181

Fibonacci sequence beginning 3, 16. A22126

Primes that remain prime through 4 iterations of function f(x) = 10x + 9. A23329

Lesser member p of cousin primes (p, p+4) such that (p+1, p+2, p+3) all have the same number of prime divisors (counted with multiplicity). A94230