28140
28,140 is an even composite number composed of five prime numbers multiplied together.
28140 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.
Prime factorization of 28140:
22 × 3 × 5 × 7 × 67
(2 × 2 × 3 × 5 × 7 × 67)See below for interesting mathematical facts about the number 28140 from the Numbermatics database.
Names of 28140
- Cardinal: 28140 can be written as Twenty-eight thousand, one hundred forty.
Scientific notation
- Scientific notation: 2.814 × 104
Factors of 28140
Divisors of 28140
Bases of 28140
- Binary: 1101101111011002
- Hexadecimal: 0x6DEC
- Base-36: LPO
Squares and roots of 28140
- 28140 squared (281402) is 791859600
- 28140 cubed (281403) is 22282929144000
-
The
square root of 28140 is 167.7498137107 -
The
cube root of 28140 is 30.4164154187
Scales and comparisons
How big is 28140?- 28,140 seconds is equal to 7 hours, 49 minutes.
-
To count from 1 to 28,140 would take you about seven hours.
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 28140 cubic inches would be around 2.5 feet tall.
Recreational maths with 28140
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