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Properties of the Number 11986

Eleven Thousand Nine Hundred Eighty-Six

Basics

Value: 11985 → 11986 → 11987

Parity: even

Prime: No

Previous Prime: 11981

Next Prime: 11987

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

2730 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

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 s1x_1 + ... + stx_t, with 1 < s1 < ... < st and {s1,..., st} = {x1,..., xt} 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
Sum of the even parts in all partitions of n into distinct parts. A116684