Properties of the Number 19836

Nineteen Thousand Eight Hundred Thirty-Six

Basics

Value: 19835 → 19836 → 19837

Parity: even

Prime: No

Previous Prime: 19819

Next Prime: 19841

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 19 × 29

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 19, 29

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110101111100

Octal: 46574

Duodecimal: B590

Hexadecimal: 4d7c

Square: 393466896

Square Root: 140.84033513166602

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

Number of polyhexes with n cells that tile the plane by 180-degree rotation (Conway criterion) but not by translation. A75210

4 times 9-gonal numbers: a(n) = 2·n*(7·n-5). A152760

Number of integer-sided pentagons having perimeter n, modulo rotations but not reflections. A293822

12 times hexagonal numbers: 12·n*(2·n-1). A143698

Row sums of triangle A144825. A144826

Numbers n such that σ(n)² - φ(n)² is a perfect square. A57654

Expansion of (1-x)^-1/(1+x+x²-2·x³). A77907

Decimal expansion of sine of 27 degrees. A19836