1820 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.
Prime factorization of 1820:
22 × 5 × 7 × 13(2 × 2 × 5 × 7 × 13)
See below for interesting mathematical facts about the number 1820 from the Numbermatics database.
Names of 1820
- Cardinal: 1820 can be written as One thousand, eight hundred twenty.
- Scientific notation: 1.82 × 103
Factors of 1820
Divisors of 1820
Bases of 1820
- Binary: 111000111002
- Hexadecimal: 0x71C
- Base-36: 1EK
Squares and roots of 1820
Scales and comparisonsHow big is 1820?
- 1,820 seconds is equal to 30 minutes, 20 seconds.
To count from 1 to 1,820 would take you about thirty 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 1820 cubic inches would be around 1 feet tall.
Recreational maths with 1820
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"Number 1820 - Facts about the integer". Numbermatics.com. 2020. Web. 1 December 2020.
Numbermatics. (2020). Number 1820 - Facts about the integer. Retrieved 1 December 2020, from https://numbermatics.com/n/1820/
Numbermatics. 2020. "Number 1820 - Facts about the integer". https://numbermatics.com/n/1820/
The information we have on file for 1820 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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