1221990
1,221,990 is an even composite number composed of six prime numbers multiplied together.
1221990 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 1221990:
2 × 3 × 5 × 7 × 11 × 232
(2 × 3 × 5 × 7 × 11 × 23 × 23)See below for interesting mathematical facts about the number 1221990 from the Numbermatics database.
Names of 1221990
- Cardinal: 1221990 can be written as One million, two hundred twenty-one thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 1.22199 × 106
Factors of 1221990
Divisors of 1221990
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 5 6 7 10 11 14 15 21 22 23 30 33 35 42 46 55 66 69 70 77 105 110 115 138 154 161 165 210 230 231 253 322 330 345 385 462 483 506 529 690 759 770 805 966 1058 1155 1265 1518 1587 1610 1771 2310 2415 2530 2645 3174 3542 3703 3795 4830 5290 5313 5819 7406 7590 7935 8855 10626 11109 11638 15870 17457 17710 18515 22218 26565 29095 34914 37030 40733 53130 55545 58190 81466 87285 111090 122199 174570 203665 244398 407330 610995 1221990
- Sum of all divisors σ(n): 3822336
- Sum of proper divisors (its aliquot sum) s(n): 2600346
- 1221990 is an abundant number, because the sum of its proper divisors (2600346) is greater than itself. Its abundance is 1378356
Bases of 1221990
- Binary: 1001010100101011001102
- Hexadecimal: 0x12A566
- Base-36: Q6W6
Squares and roots of 1221990
- 1221990 squared (12219902) is 1493259560100
- 1221990 cubed (12219903) is 1824748249846599000
-
The
square root of 1221990 is 1105.4365653443 -
The
cube root of 1221990 is 106.9110391095
Scales and comparisons
How big is 1221990?- 1,221,990 seconds is equal to 2 weeks, 3 hours, 26 minutes, 30 seconds.
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To count from 1 to 1,221,990 would take you about three weeks!
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 1221990 cubic inches would be around 8.9 feet tall.
Recreational maths with 1221990
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The information we have on file for 1221990 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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