21480690
21,480,690 is an even composite number composed of seven prime numbers multiplied together.
21480690 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21480690:
2 × 3 × 5 × 7 × 11 × 17 × 547
See below for interesting mathematical facts about the number 21480690 from the Numbermatics database.
Names of 21480690
- Cardinal: 21480690 can be written as Twenty-one million, four hundred eighty thousand, six hundred ninety.
Scientific notation
- Scientific notation: 2.148069 × 107
Factors of 21480690
Divisors of 21480690
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 7 10 11 14 15 17 21 22 30 33 34 35 42 51 55 66 70 77 85 102 105 110 119 154 165 170 187 210 231 238 255 330 357 374 385 462 510 547 561 595 714 770 935 1094 1122 1155 1190 1309 1641 1785 1870 2310 2618 2735 2805 3282 3570 3829 3927 5470 5610 6017 6545 7658 7854 8205 9299 11487 12034 13090 16410 18051 18598 19145 19635 22974 27897 30085 36102 38290 39270 42119 46495 55794 57435 60170 65093 84238 90255 92990 102289 114870 126357 130186 139485 180510 195279 204578 210595 252714 278970 306867 325465 390558 421190 511445 613734 631785 650930 716023 976395 1022890 1263570 1432046 1534335 1952790 2148069 3068670 3580115 4296138 7160230 10740345 21480690
- Sum of all divisors σ(n): 68179968
- Sum of proper divisors (its aliquot sum) s(n): 46699278
- 21480690 is an abundant number, because the sum of its proper divisors (46699278) is greater than itself. Its abundance is 25218588
Bases of 21480690
- Binary: 10100011111000100111100102
- Hexadecimal: 0x147C4F2
- Base-36: CSELU
Squares and roots of 21480690
- 21480690 squared (214806902) is 461420042876100
- 21480690 cubed (214806903) is 9911620900808212509000
-
The
square root of 21480690 is 4634.7265291493 -
The
cube root of 21480690 is 277.9816163679
Scales and comparisons
How big is 21480690?- 21,480,690 seconds is equal to 35 weeks, 3 days, 14 hours, 51 minutes, 30 seconds.
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To count from 1 to 21,480,690 would take you about twenty-two 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 21480690 cubic inches would be around 23.2 feet tall.
Recreational maths with 21480690
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The information we have on file for 21480690 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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