Properties of the Number 20098

Twenty Thousand Ninety-Eight

Basics

Value: 20097 → 20098 → 20099

Parity: even

Prime: No

Previous Prime: 20089

Next Prime: 20101

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 13 × 773

Divisors: 1, 2, 13, 26, 773, 1546, 10049, 20098

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111010000010

Octal: 47202

Duodecimal: B76A

Hexadecimal: 4e82

Square: 403929604

Square Root: 141.76741515595182

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

a(n) = ∑_k=0..n-1 T(n,k) * T(n,k+1), with T given by A026637. A26967

Number of free hexagonal polygons of symmetry class C_2h and area n. A121210

Expansion of 2·arccot(cos(x)). A101923

a(n) = ∑_{k=0..floor(3·n/8)} binomial(k+2,2) * binomial(k,3·n-8·k). A392316

Numbers k such that the continued fraction for sqrt(k) has period 61. A20400

a(n) = floor( ∑_{1 <= i < j <= n} ((sqrt(j)-sqrt(i))³) ). A25197

Numbers whose set of base-11 digits is {1,4}. A32823

a(n) = binomial(n,0) - binomial(n,2) + binomial(n,4). A58923

Number of length 2+2 0..n arrays with some pair in every consecutive three terms totalling exactly n. A245871

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 406", based on the 5-celled von Neumann neighborhood. A271772