Properties of the Number 28624

Twenty-Eight Thousand Six Hundred Twenty-Four

Basics

Value: 28623 → 28624 → 28625

Parity: even

Prime: No

Previous Prime: 28621

Next Prime: 28627

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 1789

Divisors: 1, 2, 4, 8, 16, 1789, 3578, 7156, 14312, 28624

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 110111111010000

Octal: 67720

Duodecimal: 14694

Hexadecimal: 6fd0

Square: 819333376

Square Root: 169.1862878604528

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

Expansion of e.g.f. log(-1/(-1+x·exp(x)-x)). A52858

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0ⁿ and T(n,k) = k * ∑_r=0..n binomial(3r+k,r) * binomial(r,n-r)/(3·r+k) for k > 0. A378323

Sum of square displacements over all self-avoiding walks on square lattice trapped after n steps. A78799

Triangle of coefficients of powers of e² in numerators of ∑_k>=1 {1 / (1 + k²*π²)ⁿ}. A85470

Interprimes which are of the form s·prime, s=16. A75291

Array read by antidiagonals: T(n,k) = number of double palindromes of length n using a maximum of k different symbols. A284873

Expansion of (theta₃(z)*theta₃(14z)+theta₂(z)*theta₂(14z))⁴. A28624