Properties of the Number 16985

Sixteen Thousand Nine Hundred Eighty-Five

Basics

Value: 16984 → 16985 → 16986

Parity: odd

Prime: No

Previous Prime: 16981

Next Prime: 16987

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 5 × 43 × 79

Divisors: 1, 5, 43, 79, 215, 395, 3397, 16985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100001001011001

Octal: 41131

Duodecimal: 99B5

Hexadecimal: 4259

Square: 288490225

Square Root: 130.32651303552933

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 integer partitions of n with at least two but not all parts having a common divisor greater than 1. A303139

Number of different closest packings of equal spheres for rhombohedral crystals having repeat period n. A371992

Composite squarefree numbers n such that p(i)-7 divides n+7, where p(i) are the prime factors of n. A225707

Smallest k such that n⁸+k⁸, n⁴+k⁴, n²+k², n+k are simultaneously prime. A71564

A sequence B(2,n) arising from the enumeration of braids. A263628

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 825", based on the 5-celled von Neumann neighborhood. A273581

Number of (n+2)X5 binary arrays with no more than two of any consecutive three bits set in any row or column. A202466

a(n) = (7n)⁵. A16985