21455070
21,455,070 is an even composite number composed of seven prime numbers multiplied together.
21455070 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 21455070:
2 × 3 × 5 × 7 × 13 × 29 × 271
See below for interesting mathematical facts about the number 21455070 from the Numbermatics database.
Names of 21455070
- Cardinal: 21455070 can be written as Twenty-one million, four hundred fifty-five thousand and seventy.
Scientific notation
- Scientific notation: 2.145507 × 107
Factors of 21455070
Divisors of 21455070
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 7 10 13 14 15 21 26 29 30 35 39 42 58 65 70 78 87 91 105 130 145 174 182 195 203 210 271 273 290 377 390 406 435 455 542 546 609 754 813 870 910 1015 1131 1218 1355 1365 1626 1885 1897 2030 2262 2639 2710 2730 3045 3523 3770 3794 4065 5278 5655 5691 6090 7046 7859 7917 8130 9485 10569 11310 11382 13195 15718 15834 17615 18970 21138 23577 24661 26390 28455 35230 39295 39585 47154 49322 52845 55013 56910 73983 78590 79170 102167 105690 110026 117885 123305 147966 165039 204334 235770 246610 275065 306501 330078 369915 510835 550130 613002 715169 739830 825195 1021670 1430338 1532505 1650390 2145507 3065010 3575845 4291014 7151690 10727535 21455070
- Sum of all divisors σ(n): 65802240
- Sum of proper divisors (its aliquot sum) s(n): 44347170
- 21455070 is an abundant number, because the sum of its proper divisors (44347170) is greater than itself. Its abundance is 22892100
Bases of 21455070
- Binary: 10100011101100000110111102
- Hexadecimal: 0x14760DE
- Base-36: CRUU6
Squares and roots of 21455070
- 21455070 squared (214550702) is 460320028704900
- 21455070 cubed (214550703) is 9876198438265638843000
-
The
square root of 21455070 is 4631.9617874071 -
The
cube root of 21455070 is 277.8710562589
Scales and comparisons
How big is 21455070?- 21,455,070 seconds is equal to 35 weeks, 3 days, 7 hours, 44 minutes, 30 seconds.
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To count from 1 to 21,455,070 would take you about eleven 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 21455070 cubic inches would be around 23.2 feet tall.
Recreational maths with 21455070
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The information we have on file for 21455070 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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