20870640
20,870,640 is an even composite number composed of six prime numbers multiplied together.
20870640 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 20870640:
24 × 32 × 5 × 7 × 41 × 101
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 41 × 101)See below for interesting mathematical facts about the number 20870640 from the Numbermatics database.
Names of 20870640
- Cardinal: 20870640 can be written as Twenty million, eight hundred seventy thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.087064 × 107
Factors of 20870640
Divisors of 20870640
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 35 36 40 41 42 45 48 56 60 63 70 72 80 82 84 90 101 105 112 120 123 126 140 144 164 168 180 202 205 210 240 246 252 280 287 303 315 328 336 360 369 404 410 420 492 504 505 560 574 606 615 630 656 707 720 738 808 820 840 861 909 984 1008 1010 1148 1212 1230 1260 1414 1435 1476 1515 1616 1640 1680 1722 1818 1845 1968 2020 2121 2296 2424 2460 2520 2583 2828 2870 2952 3030 3280 3444 3535 3636 3690 4040 4141 4242 4305 4545 4592 4848 4920 5040 5166 5656 5740 5904 6060 6363 6888 7070 7272 7380 8080 8282 8484 8610 9090 9840 10332 10605 11312 11480 12120 12423 12726 12915 13776 14140 14544 14760 16564 16968 17220 18180 20664 20705 21210 22960 24240 24846 25452 25830 28280 28987 29520 31815 33128 33936 34440 36360 37269 41328 41410 42420 49692 50904 51660 56560 57974 62115 63630 66256 68880 72720 74538 82820 84840 86961 99384 101808 103320 115948 124230 127260 144935 149076 165640 169680 173922 186345 198768 206640 231896 248460 254520 260883 289870 298152 331280 347844 372690 434805 463792 496920 509040 521766 579740 596304 695688 745380 869610 993840 1043532 1159480 1304415 1391376 1490760 1739220 2087064 2318960 2608830 2981520 3478440 4174128 5217660 6956880 10435320 20870640
- Sum of all divisors σ(n): 82869696
- Sum of proper divisors (its aliquot sum) s(n): 61999056
- 20870640 is an abundant number, because the sum of its proper divisors (61999056) is greater than itself. Its abundance is 41128416
Bases of 20870640
- Binary: 10011111001110101111100002
- Hexadecimal: 0x13E75F0
- Base-36: CFBW0
Squares and roots of 20870640
- 20870640 squared (208706402) is 435583614009600
- 20870640 cubed (208706403) is 9090908797893318144000
-
The
square root of 20870640 is 4568.4395585363 -
The
cube root of 20870640 is 275.3247513319
Scales and comparisons
How big is 20870640?- 20,870,640 seconds is equal to 34 weeks, 3 days, 13 hours, 24 minutes.
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To count from 1 to 20,870,640 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 20870640 cubic inches would be around 22.9 feet tall.
Recreational maths with 20870640
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Keywords: Divisors of 20870640, math, Factors of 20870640, curriculum, school, college, exams, university, Prime factorization of 20870640, STEM, science, technology, engineering, physics, economics, calculator, twenty million, eight hundred seventy thousand, six hundred forty.