Properties of the Number -209166

Two Hundred Nine Thousand One Hundred Sixty-Six

Basics

Value: -209167 → -209166 → -209165

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 71 × 491

Divisors: 1, 2, 3, 6, 71, 142, 213, 426, 491, 982

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110011000100001110

Octal: -630416

Duodecimal: -A1066

Hexadecimal: -3310e

Square: 43750415556

Square Root: 457.34669562597696

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

Column 1 of triangle A118032, where column 1 of the matrix square of A118032 forms a bisection of this sequence. A118034

Numbers k with at least 4 prime factors such that A380459(k) is in A048103, i.e., has no divisors of the form p^p. A380476

Column 1 of triangle A118040, which is the matrix square of triangle A118032; also equals a bisection of A118034, which is column 1 of A118032. A118042

Define a set of generalized Syracuse sequences starting with x(1)=2·n+1 a positive odd integer, if x(i) is odd prime set x(i+1)=67·x(i)+1, if x(i) is odd not prime set x(i+1)=3·x(i)+1 and if x(i) is even then set x(i+1)=x(i)/2. Then a(n) is the first index i > 1 at which x(i) reaches 1. A300286