Properties of the Number 28244

Twenty-Eight Thousand Two Hundred Forty-Four

Basics

Value: 28243 → 28244 → 28245

Parity: even

Prime: No

Previous Prime: 28229

Next Prime: 28277

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 23 × 307

Divisors: 1, 2, 4, 23, 46, 92, 307, 614, 1228, 7061

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111001010100

Octal: 67124

Duodecimal: 14418

Hexadecimal: 6e54

Square: 797723536

Square Root: 168.05951326836575

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

Numbers k such that the first 9 decimal digits of the k-th Fibonacci number is 1-9 pandigital. A112516

Number of rooted trees with total weight n, where the weight of a node at height k is k (with the root considered to be at level 0). A117356

Number of -n..n arrays x(0..4) of 5 elements with zero sum and elements alternately strictly increasing and strictly decreasing. A200059

a(n) = 4^n-1 - 3·3^n-1 + 3·2^n-1 - 1 (essentially Stirling numbers of second kind). A28244

The hyper-Wiener index of the nanostar dendrimer D_n. A227493