Properties of the Number -218689

Two Hundred Eighteen Thousand Six Hundred Eighty-Nine

Basics

Value: -218690 → -218689 → -218688

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 29 × 7541

Divisors: 1, 29, 7541, 218689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110101011001000001

Octal: -653101

Duodecimal: -A6681

Hexadecimal: -35641

Square: 47824878721

Square Root: 467.64195705689195

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)*a(n-9) = a(n-1)*a(n-8)+a(n-4)+a(n-5) with initial terms a(1)=...=a(9)=1. A133847

a(n) = (16/3)*(n+1)*n*(n-1) + 8·n² + 1. A212668