868

868 is an even composite number composed of three prime numbers multiplied together.

What does the number 868 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

868 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 868:

22 × 7 × 31

(2 × 2 × 7 × 31)

See below for interesting mathematical facts about the number 868 from the Numbermatics database.


Names of 868

  • Cardinal: 868 can be written as Eight hundred sixty-eight.

Scientific notation

  • Scientific notation: 8.68 × 102

Factors of 868

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 40

Divisors of 868

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1792
  • Sum of proper divisors (its aliquot sum) s(n): 924
  • 868 is an abundant number, because the sum of its proper divisors (924) is greater than itself. Its abundance is 56

Bases of 868

  • Binary: 11011001002
  • Hexadecimal: 0x364
  • Base-36: O4

Squares and roots of 868

  • 868 squared (8682) is 753424
  • 868 cubed (8683) is 653972032
  • The square root of 868 is 29.4618397253
  • The cube root of 868 is 9.5390818455

Scales and comparisons

How big is 868?
  • 868 seconds is equal to 14 minutes, 28 seconds.
  • To count from 1 to 868 would take you about seven minutes.

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 868 cubic inches would be around 0.8 feet tall.

Recreational maths with 868

  • 868 is the same when its digits are reversed! That makes it a palindromic number.
  • The number of decimal digits it has is: 3
  • The sum of 868's digits is 22
  • More coming soon!

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The information we have on file for 868 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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