Properties of the Number -130816

One Hundred Thirty Thousand Eight Hundred Sixteen

Basics

Value: -130817 → -130816 → -130815

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁸ × 7 × 73

Divisors: 1, 2, 4, 7, 8, 14, 16, 28, 32, 56

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111111100000000

Octal: -377400

Duodecimal: -63854

Hexadecimal: -1ff00

Square: 17112825856

Square Root: 361.68494577463406

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 ∑_k>=1 (-1)^k+1*k·x^k/(1 - k·x^k). A308366

a(n) = 2^n-1*(2ⁿ - 1), n >= 0. A6516

a(n) = 4·a(n-1) - 6·a(n-2) + 4·a(n-3), n > 3, with a(0)=a(1)=a(2)=0, a(3)=1. A749

Sum of every 4th entry of row n in Pascal's triangle, starting at "n choose 0". A38503

Numbers b such that b¹³¹⁰⁷² + 1 is prime. A253854

G.f.: 1/((1-2·x)*(1-2·x²)). A122746

a(n) = n²*(2·n² - 1); also ∑_k=0..n-1 (2k+1)³. A2593

Number of reversible strings with n beads of 2 colors. If more than 1 bead, not palindromic. A32085

Transform of n³ by the Riordan array (1/(1-x²), x). A105636

Cogrowth sequence of the 16-element group C8 X C2 = <S,T | S⁸, T², [S,T]>. A377840