Properties of the Number 28306

Twenty-Eight Thousand Three Hundred Six

Basics

Value: 28305 → 28306 → 28307

Parity: even

Prime: No

Previous Prime: 28297

Next Prime: 28307

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 14153

Divisors: 1, 2, 14153, 28306

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111010010010

Octal: 67222

Duodecimal: 1446A

Hexadecimal: 6e92

Square: 801229636

Square Root: 168.24387061643583

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

G.f.: ∑_n>=0 xⁿ * (1 + xⁿ)ⁿ / (1 - xⁿ⁺¹)ⁿ⁺¹. A325046

Numbers k such that the continued fraction for sqrt(k) has period 63. A20402

Number of length-(n+1) 0..4 arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero. A268323

a(n) = A000045(n) - A000931(n). A129973

Partial sums of A003214. A174566

Least positive integer k <= n such that 2^k + (n - k) is prime, or 0 if such an integer k does not exist. A231557

T(n,k)=Number of length-(n+1) 0..k arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero. A268327

Triangle read by rows of numbers of permutations eliminating just card k out of n in game of Mousetrap. A28306

Expansion of 1/(1 - x/(1 - 9·x)^5/3). A382517