21047040
21,047,040 is an even composite number composed of five prime numbers multiplied together.
21047040 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred sixty divisors.
Prime factorization of 21047040:
28 × 34 × 5 × 7 × 29
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 7 × 29)See below for interesting mathematical facts about the number 21047040 from the Numbermatics database.
Names of 21047040
- Cardinal: 21047040 can be written as Twenty-one million, forty-seven thousand and forty.
Scientific notation
- Scientific notation: 2.104704 × 107
Factors of 21047040
Divisors of 21047040
- Number of divisors d(n): 360
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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 27 28 29 30 32 35 36 40 42 45 48 54 56 58 60 63 64 70 72 80 81 84 87 90 96 105 108 112 116 120 126 128 135 140 144 145 160 162 168 174 180 189 192 203 210 216 224 232 240 252 256 261 270 280 288 290 315 320 324 336 348 360 378 384 405 406 420 432 435 448 464 480 504 522 540 560 567 576 580 609 630 640 648 672 696 720 756 768 783 810 812 840 864 870 896 928 945 960 1008 1015 1044 1080 1120 1134 1152 1160 1218 1260 1280 1296 1305 1344 1392 1440 1512 1566 1620 1624 1680 1728 1740 1792 1827 1856 1890 1920 2016 2030 2088 2160 2240 2268 2304 2320 2349 2436 2520 2592 2610 2688 2784 2835 2880 3024 3045 3132 3240 3248 3360 3456 3480 3654 3712 3780 3840 3915 4032 4060 4176 4320 4480 4536 4640 4698 4872 5040 5184 5220 5376 5481 5568 5670 5760 6048 6090 6264 6480 6496 6720 6912 6960 7308 7424 7560 7830 8064 8120 8352 8640 8960 9072 9135 9280 9396 9744 10080 10368 10440 10962 11136 11340 11520 11745 12096 12180 12528 12960 12992 13440 13920 14616 15120 15660 16128 16240 16443 16704 17280 18144 18270 18560 18792 19488 20160 20736 20880 21924 22272 22680 23490 24192 24360 25056 25920 25984 26880 27405 27840 29232 30240 31320 32480 32886 33408 34560 36288 36540 37120 37584 38976 40320 41760 43848 45360 46980 48384 48720 50112 51840 51968 54810 55680 58464 60480 62640 64960 65772 66816 72576 73080 75168 77952 80640 82215 83520 87696 90720 93960 97440 100224 103680 109620 111360 116928 120960 125280 129920 131544 145152 146160 150336 155904 164430 167040 175392 181440 187920 194880 200448 219240 233856 241920 250560 259840 263088 292320 300672 328860 334080 350784 362880 375840 389760 438480 467712 501120 526176 584640 601344 657720 701568 725760 751680 779520 876960 1002240 1052352 1169280 1315440 1403136 1503360 1753920 2104704 2338560 2630880 3006720 3507840 4209408 5261760 7015680 10523520 21047040
- Sum of all divisors σ(n): 89036640
- Sum of proper divisors (its aliquot sum) s(n): 67989600
- 21047040 is an abundant number, because the sum of its proper divisors (67989600) is greater than itself. Its abundance is 46942560
Bases of 21047040
- Binary: 10100000100100111000000002
- Hexadecimal: 0x1412700
- Base-36: CJ400
Squares and roots of 21047040
- 21047040 squared (210470402) is 442977892761600
- 21047040 cubed (210470403) is 9323373428069105664000
-
The
square root of 21047040 is 4587.7053087573 -
The
cube root of 21047040 is 276.0982636879
Scales and comparisons
How big is 21047040?- 21,047,040 seconds is equal to 34 weeks, 5 days, 14 hours, 24 minutes.
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To count from 1 to 21,047,040 would take you about nine hours!
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 21047040 cubic inches would be around 23 feet tall.
Recreational maths with 21047040
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The information we have on file for 21047040 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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