Properties of the Number 16209

Sixteen Thousand Two Hundred Nine

Basics

Value: 16208 → 16209 → 16210

Parity: odd

Prime: No

Previous Prime: 16193

Next Prime: 16217

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 1801

Divisors: 1, 3, 9, 1801, 5403, 16209

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111101010001

Octal: 37521

Duodecimal: 9469

Hexadecimal: 3f51

Square: 262731681

Square Root: 127.31457104353767

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(0)=3; a(n) = n² + a(n-1) for n>0. A153057

Number of connected undirected unlabeled loopless multigraphs with 4 vertices and n edges. A290778

a(1)=1; for n>1, a(n) = a(n-1) + n⁰ if n odd, a(n) = a(n-1) + n³ if n is even. A135332

Numbers k for which 5·k-4, 5·k-2, 5·k+2, and 5·k+4 are primes. A178082

a(n) = 7·n² + 2·n - 15. A239796

a(n) = sum of the first n primes whose distance to next prime is 4. A360226

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-1100-0111-0010 pattern in any orientation. A147044

Expansion of 1/((1-x)(1-3x)(1-5x)). A16209

T(n,k) = number of ways to place any number of 3X1 tiles of k distinguishable colors into an nX1 grid. A193515