Properties of the Number 20882

Twenty Thousand Eight Hundred Eighty-Two

Basics

Value: 20881 → 20882 → 20883

Parity: even

Prime: No

Previous Prime: 20879

Next Prime: 20887

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 53 × 197

Divisors: 1, 2, 53, 106, 197, 394, 10441, 20882

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000110010010

Octal: 50622

Duodecimal: 10102

Hexadecimal: 5192

Square: 436057924

Square Root: 144.5060552364502

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

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299689

States of a dynamic storage system. A5594

Numbers k such that sopf(k) = sopf(k+2), where sopf(k) = A008472(k). A63968

Partial sums of A006567. A172463

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 278", based on the 5-celled von Neumann neighborhood. A271097

p-INVERT of (1,0,0,1,0,0,1,0,0,...), where p(S) = (1 - S)(1 + S²). A292323

Number of nX4 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299685

Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299687

Numbers whose base-12 representation has exactly 5 runs. A43654

Ordered hypotenuses (with multiplicity) of primitive Pythagorean triangles. A20882