Properties of the Number 28068

Twenty-Eight Thousand Sixty-Eight

Basics

Value: 28067 → 28068 → 28069

Parity: even

Prime: No

Previous Prime: 28057

Next Prime: 28069

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ² × 3 × 2339

Divisors: 1, 2, 3, 4, 6, 12, 2339, 4678, 7017, 9356

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110110100100

Octal: 66644

Duodecimal: 142B0

Hexadecimal: 6da4

Square: 787812624

Square Root: 167.53507095530773

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 self-inverse permutations p on [n] with displacement of elements restricted by 8: |p(i)-i| <= 8. A239080

Number of distinct lines passing through at least two points in a triangular grid of side n. A244504

Expansion of ( 1 + 9 * ∑_k>=0 x^{2^k}/(1 - x^{2^k}) )^1/3. A382334

Numbers k such that 3·13^k - 2 is prime. A58025

Nearest integer to log(n!)^{1 + log(1 + log(n})). A62444

Numbers k such that 301·2^k+1 is prime. A322915

Partial sums of squares of Catalan numbers (A000108). A94639

Number of permutations of length n with longest increasing subsequence of length 4. A1455

Expansion of 1/((1-3x)(1-5x)(1-9x)(1-10x)). A28068