Properties of the Number 16806

Sixteen Thousand Eight Hundred Six

Basics

Value: 16805 → 16806 → 16807

Parity: even

Prime: No

Previous Prime: 16787

Next Prime: 16811

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 2801

Divisors: 1, 2, 3, 6, 2801, 5602, 8403, 16806

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100000110100110

Octal: 40646

Duodecimal: 9886

Hexadecimal: 41a6

Square: 282441636

Square Root: 129.63795740445775

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

Jordan function J₅(n). A59378

Pseudoprimes to base 7. A5938

a(n) = 7ⁿ-1. A24075

Even pseudoprimes to base 7. A130434

a(n) = ∑_{d∣n, n/d==1 mod 4} d⁵ - ∑_{d∣n, n/d==3 mod 4} d⁵. A321829

Square array A(n,k), n >= 1, k >= 0, read by antidiagonals: A(n,k) = ∑_{d∣n, d==1 (mod 4)} d^k - ∑_{d∣n, d==3 (mod 4)} d^k. A322143

Period of the Fibonacci 5-step sequence A001591 mod n. A106303

Difference of two positive 5th powers. A181124

Numbers of the form i·7^j-1 (i=1..6, j >= 0). A181303

Number of partitions of n having population standard deviation >= 2. A238662