Properties of the Number 28425

Twenty-Eight Thousand Four Hundred Twenty-Five

Basics

Value: 28424 → 28425 → 28426

Parity: odd

Prime: No

Previous Prime: 28411

Next Prime: 28429

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 ² × 379

Divisors: 1, 3, 5, 15, 25, 75, 379, 1137, 1895, 5685

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

603 Try Today's Challenge

Representations

Binary: 110111100001001

Octal: 67411

Duodecimal: 14549

Hexadecimal: 6f09

Square: 807980625

Square Root: 168.59715300087365

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) = (16/3)*(n+1)*n*(n-1) + 8·n² + 1. A212668

Triangle T, read by rows, such that the matrix inverse satisfies: [T^-1](n,k) = -(k+1)*T(n-1,0) for n>k>=0, with T(n,n)=1 for n>=0. A112911

a(n) = ∑_i=0..n digsum₄(i)⁴, where digsum₄(i) = A053737(i). A231667

Expansion of 1/(1-x⁵-x⁶-x⁷-x⁸-x⁹-x¹⁰-x¹¹). A17842

a(n) = 1 + 4·n*(1 + 2·n²)/3. A171272

Number of n X 3 binary arrays with rows and columns lexicographically nondecreasing and column sums nonincreasing. A266465

Clog sequence in base 4. Right to left concatenation of n, int(log₄(n)), int(log₄(int(log₄(n)))), ... in base 4. A28425