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

156 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 156:

22 × 3 × 13

(2 × 2 × 3 × 13)

See below for interesting mathematical facts about the number 156 from the Numbermatics database.

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Names Factors Divisors Scales Roots Fun

Names of 156

  • Cardinal: 156 can be written as One hundred fifty-six.

Scientific notation

  • Scientific notation: 1.56 × 102

Factors of 156

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 18

Divisors of 156

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 392
  • Sum of proper divisors (its aliquot sum) s(n): 236
  • 156 is an abundant number, because the sum of its proper divisors (236) is greater than itself. Its abundance is 80

Bases of 156

  • Binary: 10011100 2
  • Hexadecimal: 0x9c

Squares and roots of 156

  • 156 squared (1562) is 24336
  • 156 cubed (1563) is 3796416
  • The square root of 156 is 12.4899959968
  • The cube root of 156 is 5.3832126121

Scales and comparisons

How big is 156?
  • 156 seconds is equal to 2 minutes, 36 seconds.
  • To count from 1 to 156 would take you about one minute.

    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.

    Note: we do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!

  • A cube with a volume of 156 cubic inches would be around 0.4 feet tall.

Recreational maths with 156

  • 156 backwards is 651
  • 156 is a Harshad number.
  • The number of decimal digits it has is: 3
  • The sum of 156's digits is 12
  • More coming soon!

The information we have on file for 156 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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