Properties of the Number 28228

Twenty-Eight Thousand Two Hundred Twenty-Eight

Basics

Value: 28227 → 28228 → 28229

Parity: even

Prime: No

Previous Prime: 28219

Next Prime: 28229

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 7057

Divisors: 1, 2, 4, 7057, 14114, 28228

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111001000100

Octal: 67104

Duodecimal: 14404

Hexadecimal: 6e44

Square: 796819984

Square Root: 168.01190434013895

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 partitions of partitions of n where all partitions have the same sum. A305551

Number of bracelet structures using a maximum of six different colored beads. A56356

Numbers missing from A001033 despite satisfying the necessary congruence conditions (see comments). A274470

Numbers with digits 2 and 8 only. A284922

a(n) = 16·n² + 4. A158444

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 84. A31762

Catalan numbers: C(n) = binomial(2n,n)/(n+1) = (2n)!/(n!(n+1)!). A108

Array read by antidiagonals: T(n,k) is the number of color patterns (set partitions) in an unoriented cycle of length n using k or fewer colors (subsets). A320748

Expansion of 1/((1-7x)(1-10x)(1-11x)(1-12x)). A28228