Properties of the Number 28662

Twenty-Eight Thousand Six Hundred Sixty-Two

Basics

Value: 28661 → 28662 → 28663

Parity: even

Prime: No

Previous Prime: 28661

Next Prime: 28663

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 17 × 281

Divisors: 1, 2, 3, 6, 17, 34, 51, 102, 281, 562

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111111110110

Octal: 67766

Duodecimal: 14706

Hexadecimal: 6ff6

Square: 821510244

Square Root: 169.29855285855223

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

Descending dungeons: for definition see Comments lines. A121295

a(n) = Fibonacci(n) + 5. A157729

Number of partitions of prime(n) into n primes. A259254

Expansion of 1 / ((1-x)³ - x⁷). A392544

a(n) is a non-palindromic composite located between twin primes whose reverse, which is less than it, is also located between twin primes. A103741

Expansion of 2·x⁴*(1-2·x+x⁴)/((1+x)*(1-2·x)²*(1-x-x²)). A219752

a(n) = round(n*φ¹⁴), where φ is the golden ratio, A001622. A4949

Expansion of ψ(x⁴) / χ(-x)² in powers of·where ψ(), χ() are Ramanujan θ functions. A260599

Elements of A103741 that do not terminate in a zero digit. A103764

a(1)=2. For n >=2, a(n) = the least integer >= a(n-1) that is not coprime to both a(n-1)+1 and a(n-1). A140525