Properties of the Number 28188

Twenty-Eight Thousand One Hundred Eighty-Eight

Basics

Value: 28187 → 28188 → 28189

Parity: even

Prime: No

Previous Prime: 28183

Next Prime: 28201

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ⁵ × 29

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 27, 29

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111000011100

Octal: 67034

Duodecimal: 14390

Hexadecimal: 6e1c

Square: 794563344

Square Root: 167.89282295559866

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

Numbers k such that binomial(2k,k)+1 is prime. A66699

Number of edges in an diagonal-edged (or diamond-shaped) checkerboard with width and height 2·n-1 (see Comments in A333434 for definition). A333460

Number of partitions p of n such that (number of odd numbers in p) is a part of p. A241545

Expansion of 1/(2 - (1 + 9·x)^1/3). A373713

Second column of A218869. A218871

Numbers k such that (86·10^k - 311)/9 is prime. A293911

G.f. A(x) satisfies A(x) = (1 + x·A(x))² * (1 + 3·A(x)) / 4. A231553

Expansion of 1/((1-5·x)*(1-7·x)*(1-10·x)*(1-12·x)). A28188