21368920
21,368,920 is an even composite number composed of five prime numbers multiplied together.
21368920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21368920:
23 × 5 × 19 × 31 × 907
(2 × 2 × 2 × 5 × 19 × 31 × 907)See below for interesting mathematical facts about the number 21368920 from the Numbermatics database.
Names of 21368920
- Cardinal: 21368920 can be written as Twenty-one million, three hundred sixty-eight thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.136892 × 107
Factors of 21368920
Divisors of 21368920
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 4 5 8 10 19 20 31 38 40 62 76 95 124 152 155 190 248 310 380 589 620 760 907 1178 1240 1814 2356 2945 3628 4535 4712 5890 7256 9070 11780 17233 18140 23560 28117 34466 36280 56234 68932 86165 112468 137864 140585 172330 224936 281170 344660 534223 562340 689320 1068446 1124680 2136892 2671115 4273784 5342230 10684460 21368920
- Sum of all divisors σ(n): 52300800
- Sum of proper divisors (its aliquot sum) s(n): 30931880
- 21368920 is an abundant number, because the sum of its proper divisors (30931880) is greater than itself. Its abundance is 9562960
Bases of 21368920
- Binary: 10100011000010000010110002
- Hexadecimal: 0x1461058
- Base-36: CQ0D4
Squares and roots of 21368920
- 21368920 squared (213689202) is 456630741966400
- 21368920 cubed (213689203) is 9757705794620644288000
-
The
square root of 21368920 is 4622.6529179683 -
The
cube root of 21368920 is 277.4986391731
Scales and comparisons
How big is 21368920?- 21,368,920 seconds is equal to 35 weeks, 2 days, 7 hours, 48 minutes, 40 seconds.
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To count from 1 to 21,368,920 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 21368920 cubic inches would be around 23.1 feet tall.
Recreational maths with 21368920
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The information we have on file for 21368920 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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