Properties of the Number 28444

Twenty-Eight Thousand Four Hundred Forty-Four

Basics

Value: 28443 → 28444 → 28445

Parity: even

Prime: No

Previous Prime: 28439

Next Prime: 28447

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 13 × 547

Divisors: 1, 2, 4, 13, 26, 52, 547, 1094, 2188, 7111

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111100011100

Octal: 67434

Duodecimal: 14564

Hexadecimal: 6f1c

Square: 809061136

Square Root: 168.65349092147486

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

Expansion of 1 - x/(1 - x²/(1 - x³/(1 - x⁴/(1 - x⁵/(1 - x⁶/(1 - ... - xⁿ/(1 - ...))))))), a continued fraction. A291148

G.f. = b(2)*b(6)/(3·x⁶-2·x⁵-2·x+1), where b(k) = (1-x^k)/(1-x). A266374

Numbers whose binary expansion consists of alternating runs of 1's and 0's where each run of 0's is exactly one shorter than the preceding run of 1's, and the expansion ends with a 0-run. A387270

Floor(1/{(9+n⁴)^1/4}), where {} = fractional part. A184633

Busy Beaver sequence, or Rado's σ function: maximal number of 1's that an n-state Turing machine can print on an initially blank tape before halting. A28444

Boomerang numbers: their last digit "comes back" to occupy the place of their first digit (see the Comments section for the explanation). A308306