Properties of the Number -11986

Eleven Thousand Nine Hundred Eighty-Six

Basics

Value: -11987 → -11986 → -11985

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 2 × 13 × 461

Divisors: 1, 2, 13, 26, 461, 922, 5993, 11986

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -10111011010010

Octal: -27322

Duodecimal: -6B2A

Hexadecimal: -2ed2

Square: 143664196

Square Root: 109.48059188732951

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) = ∑_k=1..n (-1)^k*k³*floor(n/k). A366917

Number of multigraphs with 5 nodes and n edges. A14395

Denominators of self-convergents to 1/(e-2). A96654

T(n,k)=Number of n-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-queen's tours (antidiagonal moves become knight moves) on a kXk board summed over all starting positions. A187857

Positions of 2's in A264977; positions of 3's in A277330. A277712

a(1)=1. a(n) = a(n-1) + sum of the squares which are among the first (n-1) terms of the sequence. A101135

Numbers that can be written in exactly two different ways as s₁^x_1 + ... + s_t^x_t, with 1 < s₁ < ... < s_t and {s₁,..., s_t} = {x₁,..., x_t} for some t > 0. A386966

Denominators of successive convergents to continued fraction 1/(2+2/(3+3/(4+4/(5+5/(6+6/(7+7/(8+8/9+...))))))). A53520

The smallest magic constant for n X n magic square with prime entries (regarding 1 as a prime). A73502

Number of thrice-partitions of n. A301595