Properties of the Number 28532

Twenty-Eight Thousand Five Hundred Thirty-Two

Basics

Value: 28531 → 28532 → 28533

Parity: even

Prime: No

Previous Prime: 28517

Next Prime: 28537

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 7 × 1019

Divisors: 1, 2, 4, 7, 14, 28, 1019, 2038, 4076, 7133

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111101110100

Octal: 67564

Duodecimal: 14618

Hexadecimal: 6f74

Square: 814075024

Square Root: 168.91417939296866

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 eight fourth powers in exactly ten ways. A345842

∑_i=0..n ∑_j=0..i a(j) * a(i-j) = (-7)ⁿ. A85456

a(n) = 4*∑_i=0..n-1 C(2·i+1, i)*C(n-1, n-1-i)*(-1)^n-1-i*2ⁱ for n > 0, a(0) = 1. A85458

<h[d+1,d-1],s[d,d]*s[d,d]*s[d,d]> where h[d+1,d-1] is a homogeneous symmetric function, s[d,d] is a Schur function indexed by two parts, * represents the Kronecker product and <, > is the standard scalar product on symmetric functions. A115376

G.f. A(x) satisfies: A(x) = ∑_n>=0 xⁿ * (A(x) + (1+x)ⁿ)ⁿ. A302061

a(n) = (3·n-1)*(n⁴-18·n³+179·n²-582·n+720)/120. A381193

Numbers k such that (2^k + 1)³ - 2 is a semiprime. A360994

Character of extremal vertex operator algebra of rank 23/2. A28532