Properties of the Number 28725

Twenty-Eight Thousand Seven Hundred Twenty-Five

Basics

Value: 28724 → 28725 → 28726

Parity: odd

Prime: No

Previous Prime: 28723

Next Prime: 28729

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 ² × 383

Divisors: 1, 3, 5, 15, 25, 75, 383, 1149, 1915, 5745

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 111000000110101

Octal: 70065

Duodecimal: 14759

Hexadecimal: 7035

Square: 825125625

Square Root: 169.48451256678294

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

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 217", based on the 5-celled von Neumann neighborhood. A270911

Numbers whose base-5 representation contains exactly three 0's and three 4's. A45217

a(n) = floor(n/2) * floor((n-1)/2) * floor((n-2)/2) * floor((n-3)/2) * floor((n-4)/2) / 12. A28725