886
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1332
- Proper Divisor Sum (Aliquot Sum)
- 446
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 442
- Möbius Function
- 1
- Radical
- 886
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 54
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Names
- German
- achthundertsechsundachtzig· ordinal: achthundertsechsundachtzigste
- English
- eight hundred eighty-six· ordinal: eight hundred eighty-sixth
- Spanish
- ochocientos ochenta y seis· ordinal: 886º
- French
- huit cent quatre-vingt-six· ordinal: huit cent quatre-vingt-sixième
- Italian
- ottocentoottantasei· ordinal: 886º
- Latin
- octingenti octoginta sex· ordinal: 886.
- Portuguese
- oitocentos e oitenta e seis· ordinal: 886º
Appears in sequences
- Number of nonnegative solutions to x^2 + y^2 <= n^2.at n=33A000603
- Number of primes < prime(n)^2.at n=22A000879
- Numbers in which every digit contains at least one loop (version 1).at n=41A001743
- Numbers k such that (k^2 + k + 1)/21 is prime.at n=42A002644
- E-trees with at most 2 colors.at n=6A007141
- Coordination sequence T2 for Zeolite Code NES.at n=19A008206
- Coordination sequence T2 for feldspar.at n=20A008255
- Coordination sequence T2 for Moganite, also for BGB1.at n=19A008259
- Coordination sequence T1 for Scapolite.at n=19A008262
- Coordination sequence T4 for Zeolite Code VET.at n=18A009905
- Coordination sequence for CaF2(1), F position.at n=10A009924
- a(n) = floor(n*(n-1)*(n-2)/9).at n=21A011891
- Values of k at which the period of the continued fraction for sqrt(k) sets a new record.at n=21A013645
- Least m such that the continued fraction for sqrt(m) has period n.at n=54A013646
- Number of ordered quadruples of integers from [ 1,n ] with no common factors between pairs.at n=19A015636
- Number of 5-tuples of different integers from [ 1,n ] with no common factors among pairs.at n=19A015698
- Numbers n such that phi(n) + 8 | sigma(n + 8), where phi = A000010 and sigma = A000203.at n=39A015787
- Eight iterations of Reverse and Add are needed to reach a palindrome.at n=7A015988
- Numbers k such that the continued fraction for sqrt(k) has period 54.at n=0A020393
- Numbers that are the sum of 3 nonzero squares in exactly 5 ways.at n=53A025325