Properties of the Number -130390

One Hundred Thirty Thousand Three Hundred Ninety

Basics

Value: -130391 → -130390 → -130389

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 × 13 × 17 × 59

Divisors: 1, 2, 5, 10, 13, 17, 26, 34, 59, 65

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -11111110101010110

Octal: -376526

Duodecimal: -6355A

Hexadecimal: -1fd56

Square: 17001552100

Square Root: 361.0955552204984

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

L.g.f.: ∑_n>=1 xⁿ/n * ∑_k=0..n binomial(n,k)² * x^k*(1-x)^n-k. A217464

If n is 0, 1, or prime, a(n) = n; else a(n) = a(n-1) + a(n-2). A265822