Properties of the Number -166405

One Hundred Sixty-Six Thousand Four Hundred Five

Basics

Value: -166406 → -166405 → -166404

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 23 × 1447

Divisors: 1, 5, 23, 115, 1447, 7235, 33281, 166405

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -101000101000000101

Octal: -505005

Duodecimal: -80371

Hexadecimal: -28a05

Square: 27690624025

Square Root: 407.9276896706082

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

Expansion of (1-x)^-1/(1 + 2·x - 2·x² - x³). A77916

From a definite integral. A2571

a(n) = ∑_i=1..n Fibonacci(2i)². A103434

a(n+4) = a(n+3)+a(n+1)+a(n)+k(n), where k(n) = 0, 1, 0, or -1 according to n mod 4. A115059