21357420
21,357,420 is an even composite number composed of six prime numbers multiplied together.
21357420 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 21357420:
22 × 3 × 5 × 7 × 211 × 241
(2 × 2 × 3 × 5 × 7 × 211 × 241)See below for interesting mathematical facts about the number 21357420 from the Numbermatics database.
Names of 21357420
- Cardinal: 21357420 can be written as Twenty-one million, three hundred fifty-seven thousand, four hundred twenty.
Scientific notation
- Scientific notation: 2.135742 × 107
Factors of 21357420
Divisors of 21357420
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 211 241 420 422 482 633 723 844 964 1055 1205 1266 1446 1477 1687 2110 2410 2532 2892 2954 3165 3374 3615 4220 4431 4820 5061 5908 6330 6748 7230 7385 8435 8862 10122 12660 14460 14770 16870 17724 20244 22155 25305 29540 33740 44310 50610 50851 88620 101220 101702 152553 203404 254255 305106 355957 508510 610212 711914 762765 1017020 1067871 1423828 1525530 1779785 2135742 3051060 3559570 4271484 5339355 7119140 10678710 21357420
- Sum of all divisors σ(n): 68952576
- Sum of proper divisors (its aliquot sum) s(n): 47595156
- 21357420 is an abundant number, because the sum of its proper divisors (47595156) is greater than itself. Its abundance is 26237736
Bases of 21357420
- Binary: 10100010111100011011011002
- Hexadecimal: 0x145E36C
- Base-36: CPRHO
Squares and roots of 21357420
- 21357420 squared (213574202) is 456139389056400
- 21357420 cubed (213574203) is 9741960510620938488000
-
The
square root of 21357420 is 4621.4088760897 -
The
cube root of 21357420 is 277.4488502429
Scales and comparisons
How big is 21357420?- 21,357,420 seconds is equal to 35 weeks, 2 days, 4 hours, 37 minutes.
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To count from 1 to 21,357,420 would take you about six days!
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 21357420 cubic inches would be around 23.1 feet tall.
Recreational maths with 21357420
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The information we have on file for 21357420 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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