Properties of the Number 28708

Twenty-Eight Thousand Seven Hundred Eight

Basics

Value: 28707 → 28708 → 28709

Parity: even

Prime: No

Previous Prime: 28703

Next Prime: 28711

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 7177

Divisors: 1, 2, 4, 7177, 14354, 28708

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000000100100

Octal: 70044

Duodecimal: 14744

Hexadecimal: 7024

Square: 824149264

Square Root: 169.43435306926398

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 subsets {x(1),x(2),...,x(k)} of {1,2,...,n} such that all differences |x(i)-x(j)| are distinct. A143823

Number of integer partitions of n into relatively prime parts that are all greater than 1. A302698

T(n,k)=Number of (n+5)X(k+5) 0..1 matrices with each 6X6 subblock idempotent. A224577

Expansion of x * φ(x) * ψ(x¹⁴) / (f(-x) * f(-x⁷)) in powers of·where φ(), ψ(), f() are Ramanujan θ functions. A193883

Leading diagonal of triangle in A079836. A79837

Number of (n+5)X6 0..1 matrices with each 6X6 subblock idempotent. A224570

Number of (n+5)X12 0..1 matrices with each 6X6 subblock idempotent. A224576

a(n) = a(n-1) + a(n - 1 minus the number of terms of a(k) == n (mod 3) so far). A60730

Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 2,1 3,0 3,1 4,1 5,1 polyhexes in any orientation on a planar nXnXn triangular grid. A155374

Number of permutations of length n containing exactly 2 occurrences of 1234 and 2 occurrences of 1243. A224294