Properties of the Number 28625

Twenty-Eight Thousand Six Hundred Twenty-Five

Basics

Value: 28624 → 28625 → 28626

Parity: odd

Prime: No

Previous Prime: 28621

Next Prime: 28627

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 ³ × 229

Divisors: 1, 5, 25, 125, 229, 1145, 5725, 28625

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 110111111010001

Octal: 67721

Duodecimal: 14695

Hexadecimal: 6fd1

Square: 819390625

Square Root: 169.1892431568863

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

a(n) = n*(11·n² - 5)/6. A4467

T(n,k)=Number of zero-sum nXk -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors. A201803

Number of distinct sums i³ + j³ + k³ + l³ for 0<=i<=j<=k<=l<=n. A374711

Coefficient triangle of polynomials (rising powers) related to Fibonacci convolutions. Companion triangle to A057995. A57280

Coefficient triangle of polynomials (falling powers) related to Fibonacci convolutions. Companion triangle to A057281. A57282

Number of permutations of length n which avoid the patterns 312, 1324, 3421; or avoid the patterns 312, 1324, 2341, etc. A116722

a(n) = n⁴ + 64. A272297

The A161671(n)-th partial sum of A161671. A161778

Number of zero-sum nX2 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors. A201797

Number of zero-sum nX5 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors. A201800