90128990
90,128,990 is an even composite number composed of six prime numbers multiplied together.
90128990 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 90128990:
2 × 5 × 7 × 59 × 139 × 157
See below for interesting mathematical facts about the number 90128990 from the Numbermatics database.
Names of 90128990
- Cardinal: 90128990 can be written as Ninety million, one hundred twenty-eight thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 9.012899 × 107
Factors of 90128990
Divisors of 90128990
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 5 7 10 14 35 59 70 118 139 157 278 295 314 413 590 695 785 826 973 1099 1390 1570 1946 2065 2198 4130 4865 5495 8201 9263 9730 10990 16402 18526 21823 41005 43646 46315 57407 64841 82010 92630 109115 114814 129682 152761 218230 287035 305522 324205 574070 648410 763805 1287557 1527610 2575114 6437785 9012899 12875570 18025798 45064495 90128990
- Sum of all divisors σ(n): 191116800
- Sum of proper divisors (its aliquot sum) s(n): 100987810
- 90128990 is an abundant number, because the sum of its proper divisors (100987810) is greater than itself. Its abundance is 10858820
Bases of 90128990
- Binary: 1010101111101000010010111102
- Hexadecimal: 0x55F425E
- Base-36: 1HNRZ2
Squares and roots of 90128990
- 90128990 squared (901289902) is 8123234838420100
- 90128990 cubed (901289903) is 732138951519616808699000
-
The
square root of 90128990 is 9493.6289162785 -
The
cube root of 90128990 is 448.3544674175
Scales and comparisons
How big is 90128990?- 90,128,990 seconds is equal to 2 years, 45 weeks, 3 hours, 49 minutes, 50 seconds.
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To count from 1 to 90,128,990 would take you about four years!
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 90128990 cubic inches would be around 37.4 feet tall.
Recreational maths with 90128990
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The information we have on file for 90128990 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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