21180807990
21,180,807,990 is an even composite number composed of six prime numbers multiplied together.
21180807990 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21180807990:
2 × 33 × 5 × 37 × 43 × 49307
(2 × 3 × 3 × 3 × 5 × 37 × 43 × 49307)See below for interesting mathematical facts about the number 21180807990 from the Numbermatics database.
Names of 21180807990
- Cardinal: 21180807990 can be written as Twenty-one billion, one hundred eighty million, eight hundred seven thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 2.118080799 × 1010
Factors of 21180807990
Divisors of 21180807990
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 5 6 9 10 15 18 27 30 37 43 45 54 74 86 90 111 129 135 185 215 222 258 270 333 370 387 430 555 645 666 774 999 1110 1161 1290 1591 1665 1935 1998 2322 3182 3330 3870 4773 4995 5805 7955 9546 9990 11610 14319 15910 23865 28638 42957 47730 49307 71595 85914 98614 143190 147921 214785 246535 295842 429570 443763 493070 739605 887526 1331289 1479210 1824359 2120201 2218815 2662578 3648718 4240402 4437630 5473077 6360603 6656445 9121795 10601005 10946154 12721206 13312890 16419231 18243590 19081809 21202010 27365385 31803015 32838462 38163618 49257693 54730770 57245427 63606030 78447437 82096155 95409045 98515386 114490854 156894874 164192310 190818090 235342311 246288465 286227135 392237185 470684622 492576930 572454270 706026933 784474370 1176711555 1412053866 2118080799 2353423110 3530134665 4236161598 7060269330 10590403995 21180807990
- Sum of all divisors σ(n): 59358942720
- Sum of proper divisors (its aliquot sum) s(n): 38178134730
- 21180807990 is an abundant number, because the sum of its proper divisors (38178134730) is greater than itself. Its abundance is 16997326740
Bases of 21180807990
- Binary: 100111011100111100101111011001101102
- Hexadecimal: 0x4EE797B36
- Base-36: 9QAI81I
Squares and roots of 21180807990
- 21180807990 squared (211808079902) is 448626627109247840100
- 21180807990 cubed (211808079903) is 9502274448002307254480322399000
-
The
square root of 21180807990 is 145536.2772301121 -
The
cube root of 21180807990 is 2766.8195843447
Scales and comparisons
How big is 21180807990?- 21,180,807,990 seconds is equal to 673 years, 25 weeks, 1 day, 5 hours, 46 minutes, 30 seconds.
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To count from 1 to 21,180,807,990 would take you about one thousand, three hundred forty-six 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 21180807990 cubic inches would be around 230.6 feet tall.
Recreational maths with 21180807990
- 21180807990 backwards is 09970808112
- 21180807990 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21180807990's digits is 45
- More coming soon!
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The information we have on file for 21180807990 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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