Properties of the Number 72228

Seventy-Two Thousand Two Hundred Twenty-Eight

Basics

Value: 72227 → 72228 → 72229

Parity: even

Prime: No

Previous Prime: 72227

Next Prime: 72229

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 13 × 463

Divisors: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001101000100100

Octal: 215044

Duodecimal: 35970

Hexadecimal: 11a24

Square: 5216883984

Square Root: 268.7526744052978

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

G.f. A(x) satisfies: 1 = ∑_n>=0 xⁿ*A(-x)^A131507(n), where A131507 is defined as "2·n+1 appears n times.". A193040

Number of permutations p of 1,2,...,n satisfying |p(i+2)-p(i)|<>5 and |p(j+5)-p(j)|<>2 for all i=1..n-2, j=1..n-5. A189567

Number of ways to place n nonattacking composite pieces rook + rider[2,5] on an n X n chessboard. A189856

Number of partitions of n having standard deviation σ > 5. A238657

Numbers k such that k⁷ - 1 and k⁷ + 1 are semiprimes. A279272

Numbers k such that k equals the sum of the reverses of the proper divisors of k. A72228