845 is an odd composite number composed of two prime numbers multiplied together.

What does the number 845 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

845 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

Prime factorization of 845:

5 × 132

(5 × 13 × 13)

See below for interesting mathematical facts about the number 845 from the Numbermatics database.

Names of 845

  • Cardinal: 845 can be written as Eight hundred forty-five.

Scientific notation

  • Scientific notation: 8.45 × 102

Factors of 845

  • Number of distinct prime factors ω(n): 2
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 18

Divisors of 845

  • Number of divisors d(n): 6
  • Complete list of divisors:
  • Sum of all divisors σ(n): 1098
  • Sum of proper divisors (its aliquot sum) s(n): 253
  • 845 is a deficient number, because the sum of its proper divisors (253) is less than itself. Its deficiency is 592

Bases of 845

  • Binary: 11010011012
  • Hexadecimal: 0x34D
  • Base-36: NH

Squares and roots of 845

  • 845 squared (8452) is 714025
  • 845 cubed (8453) is 603351125
  • The square root of 845 is 29.0688837075
  • The cube root of 845 is 9.4540719459

Scales and comparisons

How big is 845?
  • 845 seconds is equal to 14 minutes, 5 seconds.
  • To count from 1 to 845 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 845 cubic inches would be around 0.8 feet tall.

Recreational maths with 845

  • 845 backwards is 548
  • The number of decimal digits it has is: 3
  • The sum of 845's digits is 17
  • More coming soon!

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"Number 845 - Facts about the integer". Numbermatics.com. 2022. Web. 2 October 2022.

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Numbermatics. (2022). Number 845 - Facts about the integer. Retrieved 2 October 2022, from https://numbermatics.com/n/845/

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The information we have on file for 845 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!

Keywords: Divisors of 845, math, Factors of 845, curriculum, school, college, exams, university, Prime factorization of 845, STEM, science, technology, engineering, physics, economics, calculator, eight hundred forty-five.

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