1,220 is an even composite number composed of three prime numbers multiplied together.

What does the number 1220 look like?

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

1220 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 1220:

22 × 5 × 61

(2 × 2 × 5 × 61)

See below for interesting mathematical facts about the number 1220 from the Numbermatics database.

Names of 1220

  • Cardinal: 1220 can be written as One thousand, two hundred twenty.

Scientific notation

  • Scientific notation: 1.22 × 103

Factors of 1220

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 68

Divisors of 1220

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 2604
  • Sum of proper divisors (its aliquot sum) s(n): 1384
  • 1220 is an abundant number, because the sum of its proper divisors (1384) is greater than itself. Its abundance is 164

Bases of 1220

  • Binary: 100110001002
  • Hexadecimal: 0x4C4
  • Base-36: XW

Squares and roots of 1220

  • 1220 squared (12202) is 1488400
  • 1220 cubed (12203) is 1815848000
  • The square root of 1220 is 34.9284983931
  • The cube root of 1220 is 10.6852973015

Scales and comparisons

How big is 1220?
  • 1,220 seconds is equal to 20 minutes, 20 seconds.
  • To count from 1 to 1,220 would take you about twenty 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 1220 cubic inches would be around 0.9 feet tall.

Recreational maths with 1220

  • 1220 backwards is 0221
  • 1220 is a Harshad number.
  • The number of decimal digits it has is: 4
  • The sum of 1220's digits is 5
  • More coming soon!

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"Number 1220 - Facts about the integer". Numbermatics.com. 2020. Web. 28 October 2020.

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The information we have on file for 1220 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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