21428490
21,428,490 is an even composite number composed of four prime numbers multiplied together.
21428490 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.
Prime factorization of 21428490:
2 × 3 × 5 × 714283
See below for interesting mathematical facts about the number 21428490 from the Numbermatics database.
Names of 21428490
- Cardinal: 21428490 can be written as Twenty-one million, four hundred twenty-eight thousand, four hundred ninety.
Scientific notation
- Scientific notation: 2.142849 × 107
Factors of 21428490
Divisors of 21428490
Bases of 21428490
- Binary: 10100011011111001000010102
- Hexadecimal: 0x146F90A
- Base-36: CRABU
Squares and roots of 21428490
- 21428490 squared (214284902) is 459180183680100
- 21428490 cubed (214284903) is 9839537974187186049000
-
The
square root of 21428490 is 4629.0917035633 -
The
cube root of 21428490 is 277.7562603185
Scales and comparisons
How big is 21428490?- 21,428,490 seconds is equal to 35 weeks, 3 days, 21 minutes, 30 seconds.
-
To count from 1 to 21,428,490 would take you about thirty-two 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 21428490 cubic inches would be around 23.1 feet tall.
Recreational maths with 21428490
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