21430640
21,430,640 is an even composite number composed of five prime numbers multiplied together.
21430640 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 21430640:
24 × 5 × 73 × 11 × 71
(2 × 2 × 2 × 2 × 5 × 7 × 7 × 7 × 11 × 71)See below for interesting mathematical facts about the number 21430640 from the Numbermatics database.
Names of 21430640
- Cardinal: 21430640 can be written as Twenty-one million, four hundred thirty thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.143064 × 107
Factors of 21430640
Divisors of 21430640
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 4 5 7 8 10 11 14 16 20 22 28 35 40 44 49 55 56 70 71 77 80 88 98 110 112 140 142 154 176 196 220 245 280 284 308 343 355 385 392 440 490 497 539 560 568 616 686 710 770 781 784 880 980 994 1078 1136 1232 1372 1420 1540 1562 1715 1960 1988 2156 2485 2695 2744 2840 3080 3124 3430 3479 3773 3905 3920 3976 4312 4970 5390 5467 5488 5680 6160 6248 6860 6958 7546 7810 7952 8624 9940 10780 10934 12496 13720 13916 15092 15620 17395 18865 19880 21560 21868 24353 27335 27440 27832 30184 31240 34790 37730 38269 39760 43120 43736 48706 54670 55664 60368 62480 69580 75460 76538 87472 97412 109340 121765 139160 150920 153076 191345 194824 218680 243530 267883 278320 301840 306152 382690 389648 437360 487060 535766 612304 765380 974120 1071532 1339415 1530760 1948240 2143064 2678830 3061520 4286128 5357660 10715320 21430640
- Sum of all divisors σ(n): 64281600
- Sum of proper divisors (its aliquot sum) s(n): 42850960
- 21430640 is an abundant number, because the sum of its proper divisors (42850960) is greater than itself. Its abundance is 21420320
Bases of 21430640
- Binary: 10100011100000001011100002
- Hexadecimal: 0x1470170
- Base-36: CRBZK
Squares and roots of 21430640
- 21430640 squared (214306402) is 459272330809600
- 21430640 cubed (214306403) is 9842499983541446144000
-
The
square root of 21430640 is 4629.3239247217 -
The
cube root of 21430640 is 277.7655494469
Scales and comparisons
How big is 21430640?- 21,430,640 seconds is equal to 35 weeks, 3 days, 57 minutes, 20 seconds.
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To count from 1 to 21,430,640 would take you about twenty-six 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 21430640 cubic inches would be around 23.1 feet tall.
Recreational maths with 21430640
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The information we have on file for 21430640 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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