Properties of the Number 20596

Twenty Thousand Five Hundred Ninety-Six

Basics

Value: 20595 → 20596 → 20597

Parity: even

Prime: No

Previous Prime: 20593

Next Prime: 20599

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 19 × 271

Divisors: 1, 2, 4, 19, 38, 76, 271, 542, 1084, 5149

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000001110100

Octal: 50164

Duodecimal: BB04

Hexadecimal: 5074

Square: 424195216

Square Root: 143.5130656072819

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..2 arrays with row sums equal and column sums unequal to adjacent columns. A203491

Begin with a(0) = 3. Let a(n) for n > 0 be the smallest positive integer not yet in the sequence which forms part of a Pythagorean triple when paired with a(n-1). A235598

Last occurrence of n partitions in A204814. A205301

a(n) = 2·n*(7·n + 5). A195027

Number of partitions of n in which the largest summand has frequency 1, the next largest summand has frequency at most 2, the third largest has frequency at most 3, etc. A244395

Positions of 0's in A330314. A330325

A006005 (shifted) convolved with all of its regularly "aerated" variants. A161993

Number of right triangles on a (n+1)X6 grid. A189810

Number of 2Xn 0..2 arrays with row sums equal and column sums unequal to adjacent columns. A203492

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 297", based on the 5-celled von Neumann neighborhood. A271150