Properties of the Number 28685

Twenty-Eight Thousand Six Hundred Eighty-Five

Basics

Value: 28684 → 28685 → 28686

Parity: odd

Prime: No

Previous Prime: 28669

Next Prime: 28687

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 × 5737

Divisors: 1, 5, 5737, 28685

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000000001101

Octal: 70015

Duodecimal: 14725

Hexadecimal: 700d

Square: 822829225

Square Root: 169.36646657470303

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

Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 454", based on the 5-celled von Neumann neighborhood. A288395

Row sums of triangle A134380. A134381

Wiener index of a benzenoid consisting of a chain of n hexagons characterized by the encoding s = 1133 (see the Gutman et al. reference, Sec. 5). A193399

a(n) = b(n) + d(n), where b(n) = (n-th Fibonacci number > 1) and d(n) = (n-th non-Fibonacci number). A23483

n-th non-Lucas number plus Fibonacci(n + 1). A23490

Numbers k such that k and k² use only the digits 2, 5, 6, 8 and 9. A137114

Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 11. A51976

Galois numbers for p=23; order of group AGL(n,23). A28685

a(0) = 4; for n >= 0, a(n+1) = number of partitions of a(n). A72215