Properties of the Number 28643

Twenty-Eight Thousand Six Hundred Forty-Three

Basics

Value: 28642 → 28643 → 28644

Parity: odd

Prime: Yes

Previous Prime: 28631

Next Prime: 28649

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 28643

Divisors: 1, 28643

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110111111100011

Octal: 67743

Duodecimal: 146AB

Hexadecimal: 6fe3

Square: 820421449

Square Root: 169.24242966821294

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

Number of compositions of n with weakly increasing differences. A325546

Sum of the 4th powers of the odd proper divisors of n. A352032

Primes which are the sum of three positive 4th powers. A85318

Prime numbers that are the sum of three distinct positive fourth powers. A126657

Sum of 4th powers of proper divisors of n. A279363

Primes arising in A053782. A53872

Primes formed by inserting a semiprime between the semiprime's ordered factors. A229480

Primes for which the sum of all preceding odd-indexed prime gaps is exactly one greater than the sum of all preceding even-indexed prime gaps. A282178

Primes p such that continued fraction of (1 + sqrt(p))/2 has period 6: primes in A146331. A146351

Primes which are sum of the first k composite numbers and such that the sum of the first k+1 composites is also prime. A234847