Properties of the Number 28804

Twenty-Eight Thousand Eight Hundred Four

Basics

Value: 28803 → 28804 → 28805

Parity: even

Prime: No

Previous Prime: 28793

Next Prime: 28807

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 19 × 379

Divisors: 1, 2, 4, 19, 38, 76, 379, 758, 1516, 7201

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111000010000100

Octal: 70204

Duodecimal: 14804

Hexadecimal: 7084

Square: 829670416

Square Root: 169.71741218861428

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

Numbers k such that ∑_i=1..k i⁶ divides ∏_i=1..k i⁶. A166606

G.f.: ∑_n>=1 Fibonacci(n+1) * xⁿ / (1 - xⁿ). A245282

Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 595", based on the 5-celled von Neumann neighborhood. A283213

Positive integers congruent to 0 or 1 modulo 4 that cannot be written as x³ + y² + z² with x,y,z nonnegative integers. A275083

Number of (w,x,y,z) with all terms in {1,...,n} and w+x=|x-y|+|y-z|. A212676

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 177", based on the 5-celled von Neumann neighborhood. A270620

Eight bishops and one elephant on a 3 X 3 chessboard. G.f.: (1 - x - x²)/(1 - 3·x - x² + 6·x³). A175654

Number of ordered ways to write n as x³ + y² + z², where x,y,z are nonnegative integers with y <= z. A274274

Nonsquares mod 91. A28804

Number of nX4 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 3 or 4 neighboring 1s. A297745