20811000
20,811,000 is an even composite number composed of five prime numbers multiplied together.
20811000 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 20811000:
23 × 3 × 53 × 7 × 991
(2 × 2 × 2 × 3 × 5 × 5 × 5 × 7 × 991)See below for interesting mathematical facts about the number 20811000 from the Numbermatics database.
Names of 20811000
- Cardinal: 20811000 can be written as Twenty million, eight hundred eleven thousand.
Scientific notation
- Scientific notation: 2.0811 × 107
Factors of 20811000
Divisors of 20811000
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 25 28 30 35 40 42 50 56 60 70 75 84 100 105 120 125 140 150 168 175 200 210 250 280 300 350 375 420 500 525 600 700 750 840 875 991 1000 1050 1400 1500 1750 1982 2100 2625 2973 3000 3500 3964 4200 4955 5250 5946 6937 7000 7928 9910 10500 11892 13874 14865 19820 20811 21000 23784 24775 27748 29730 34685 39640 41622 49550 55496 59460 69370 74325 83244 99100 104055 118920 123875 138740 148650 166488 173425 198200 208110 247750 277480 297300 346850 371625 416220 495500 520275 594600 693700 743250 832440 867125 991000 1040550 1387400 1486500 1734250 2081100 2601375 2973000 3468500 4162200 5202750 6937000 10405500 20811000
- Sum of all divisors σ(n): 74280960
- Sum of proper divisors (its aliquot sum) s(n): 53469960
- 20811000 is an abundant number, because the sum of its proper divisors (53469960) is greater than itself. Its abundance is 32658960
Bases of 20811000
- Binary: 10011110110001100111110002
- Hexadecimal: 0x13D8CF8
- Base-36: CE1VC
Squares and roots of 20811000
- 20811000 squared (208110002) is 433097721000000
- 20811000 cubed (208110003) is 9013196671731000000000
-
The
square root of 20811000 is 4561.9074957741 -
The
cube root of 20811000 is 275.0622448633
Scales and comparisons
How big is 20811000?- 20,811,000 seconds is equal to 34 weeks, 2 days, 20 hours, 50 minutes.
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To count from 1 to 20,811,000 would take you about fifty-one 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 20811000 cubic inches would be around 22.9 feet tall.
Recreational maths with 20811000
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The information we have on file for 20811000 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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