Properties of the Number 28806

Twenty-Eight Thousand Eight Hundred Six

Basics

Value: 28805 → 28806 → 28807

Parity: even

Prime: No

Previous Prime: 28793

Next Prime: 28807

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 4801

Divisors: 1, 2, 3, 6, 4801, 9602, 14403, 28806

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000010000110

Octal: 70206

Duodecimal: 14806

Hexadecimal: 7086

Square: 829785636

Square Root: 169.723304233685

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

Pascal-(1,6,1) array. A81581

Number of tilings of a 2 X n rectangle using integer-sided rectangular tiles of equal area. A220768

Number of n X 3 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A299590

Duplicate of A081581. A143679

G.f. A(x) = lim_n->infinity (P(n) - 1)/(2·x)ⁿ, where P(1,x) = 1/sqrt(1-4·x), and P(n+1,x) = 1/sqrt(1 - 4·x + 4·x/P(n,x)) for n >= 1. A351509

Nonsquares mod 93. A28806