Properties of the Number 28523

Twenty-Eight Thousand Five Hundred Twenty-Three

Basics

Value: 28522 → 28523 → 28524

Parity: odd

Prime: No

Previous Prime: 28517

Next Prime: 28537

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 2593

Divisors: 1, 11, 2593, 28523

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111101101011

Octal: 67553

Duodecimal: 1460B

Hexadecimal: 6f6b

Square: 813561529

Square Root: 168.88753654429328

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

Numerator of ∑_k=0..n 1/binomial(n,k)². A100516

A three-dimensional version of the cellular automaton A160118, using cubes. A160119

Number of partitions p of n such that (sum of parts with multiplicity 1) <= (sum of all other parts). A240449

Numbers k such that the largest prime divisor of k⁴+1 is less than k. A309562

Expansion of (1/x) * Series_Reversion( x*(1+x-x⁴)/(1+x)³ ). A366099

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = (primes). A24468

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Fibonacci numbers), t = (1, p(1), p(2), ...). A24460

Positive integers such that the smallest positive real solution to xⁿ + x = 2*π*a(n) forms a monotonically increasing sequence as n grows. A80019

Denominator of ∑_k=0..n 1/binomial(n,k)². A100517

Character of extremal vertex operator algebra of rank 14. A28523