Properties of the Number 28139

Twenty-Eight Thousand One Hundred Thirty-Nine

Basics

Value: 28138 → 28139 → 28140

Parity: odd

Prime: No

Previous Prime: 28123

Next Prime: 28151

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 19 × 1481

Divisors: 1, 19, 1481, 28139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110111101011

Octal: 66753

Duodecimal: 1434B

Hexadecimal: 6deb

Square: 791803321

Square Root: 167.74683305505354

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

T(n,k)=Number of nXk 0..1 arrays with no element equal to a strict majority of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A279168

Number of nX3 0..1 arrays with no element equal to a strict majority of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A279163

Expansion of 1/((1-4x)(1-6x)(1-9x)(1-10x)). A28139