Properties of the Number 28031

Twenty-Eight Thousand Thirty-One

Basics

Value: 28030 → 28031 → 28032

Parity: odd

Prime: Yes

Previous Prime: 28027

Next Prime: 28051

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 28031

Divisors: 1, 28031

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110101111111

Octal: 66577

Duodecimal: 1427B

Hexadecimal: 6d7f

Square: 785736961

Square Root: 167.42460989950072

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

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and Hilbert 3-class field tower of exact length 2. A242864

Least prime k such that x' = k has n solutions, where x' is the arithmetic derivative (A003415) of x. A189559

Truncated cube numbers. A5912

Primes of the form k*(k+2)/3 - 2, k > 0. A162307

Number of n-digit 7th powers. A216657

Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and 3-principalization type (2241). A247689

Primes with 19 as smallest positive primitive root. A61331

Primes such that applying "reverse and add" twice produces two more primes. A174402

Number of (n+1)X(n+1) -8..8 symmetric matrices with every 2X2 subblock having sum zero and one or three distinct values. A211468

a(n) is the least number that can be written in exactly n ways as p·q + q·r + p·r where (p,q,r) is an unordered triple of distinct primes. A356457