Properties of the Number 19209

Nineteen Thousand Two Hundred Nine

Basics

Value: 19208 → 19209 → 19210

Parity: odd

Prime: No

Previous Prime: 19207

Next Prime: 19211

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 19 × 337

Divisors: 1, 3, 19, 57, 337, 1011, 6403, 19209

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101100001001

Octal: 45411

Duodecimal: B149

Hexadecimal: 4b09

Square: 368985681

Square Root: 138.5965367532681

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) is the number of points in the interior of the n-th figure shown in A255011 (meaning the figure with 4n points on the perimeter). A334690

Principal diagonal of the convolution array A213778. A213779

Sums of 3 distinct powers of 7. A38482

a(n) = (2·n+1)*(12·n+1). A33576

Bond percolation series for hexagonal net. A120541

a(n) = 8·7ⁿ+1. A199485

Number of partitions of n⁴ into at most two parts. A274323

Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 92. A31590

Smallest prime that is a concatenation in base n of two or more successive numbers beginning with a power of n (including n⁰=1). A227775

Number of minimum shadings of an n X n Hitori solution grid as defined in A322125. A322150