Properties of the Number -106805

One Hundred Six Thousand Eight Hundred Five

Basics

Value: -106806 → -106805 → -106804

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 41 × 521

Divisors: 1, 5, 41, 205, 521, 2605, 21361, 106805

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -11010000100110101

Octal: -320465

Duodecimal: -51985

Hexadecimal: -1a135

Square: 11407308025

Square Root: 326.8103425535979

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) is the smallest number k larger than a(n-1) such that n·d(k)*sopf(k)=σ(k), where d is the number of divisors (A000005) and sopf the sum of prime factors without repetition (A008472). A134382

a(n) = floor(Fibonacci(n)/n). A127884

a(n) is the least integer k such that σ(k)/(d(k)*sopf(k)) = n where d=A000005, σ=A000203 and sopf=A008472. A328174