21371640
21,371,640 is an even composite number composed of five prime numbers multiplied together.
21371640 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 21371640:
23 × 3 × 5 × 313 × 569
(2 × 2 × 2 × 3 × 5 × 313 × 569)See below for interesting mathematical facts about the number 21371640 from the Numbermatics database.
Names of 21371640
- Cardinal: 21371640 can be written as Twenty-one million, three hundred seventy-one thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.137164 × 107
Factors of 21371640
Divisors of 21371640
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 313 569 626 939 1138 1252 1565 1707 1878 2276 2504 2845 3130 3414 3756 4552 4695 5690 6260 6828 7512 8535 9390 11380 12520 13656 17070 18780 22760 34140 37560 68280 178097 356194 534291 712388 890485 1068582 1424776 1780970 2137164 2671455 3561940 4274328 5342910 7123880 10685820 21371640
- Sum of all divisors σ(n): 64432800
- Sum of proper divisors (its aliquot sum) s(n): 43061160
- 21371640 is an abundant number, because the sum of its proper divisors (43061160) is greater than itself. Its abundance is 21689520
Bases of 21371640
- Binary: 10100011000011010111110002
- Hexadecimal: 0x1461AF8
- Base-36: CQ2GO
Squares and roots of 21371640
- 21371640 squared (213716402) is 456746996289600
- 21371640 cubed (213716403) is 9761432375782666944000
-
The
square root of 21371640 is 4622.9471119623 -
The
cube root of 21371640 is 277.5104127251
Scales and comparisons
How big is 21371640?- 21,371,640 seconds is equal to 35 weeks, 2 days, 8 hours, 34 minutes.
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To count from 1 to 21,371,640 would take you about fifty-one minutes!
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 21371640 cubic inches would be around 23.1 feet tall.
Recreational maths with 21371640
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