20397440
20,397,440 is an even composite number composed of five prime numbers multiplied together.
20397440 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 20397440:
27 × 5 × 7 × 29 × 157
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 29 × 157)See below for interesting mathematical facts about the number 20397440 from the Numbermatics database.
Names of 20397440
- Cardinal: 20397440 can be written as Twenty million, three hundred ninety-seven thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.039744 × 107
Factors of 20397440
Divisors of 20397440
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 29 32 35 40 56 58 64 70 80 112 116 128 140 145 157 160 203 224 232 280 290 314 320 406 448 464 560 580 628 640 785 812 896 928 1015 1099 1120 1160 1256 1570 1624 1856 2030 2198 2240 2320 2512 3140 3248 3712 4060 4396 4480 4553 4640 5024 5495 6280 6496 8120 8792 9106 9280 10048 10990 12560 12992 16240 17584 18212 18560 20096 21980 22765 25120 25984 31871 32480 35168 36424 43960 45530 50240 63742 64960 70336 72848 87920 91060 100480 127484 129920 140672 145696 159355 175840 182120 254968 291392 318710 351680 364240 509936 582784 637420 703360 728480 1019872 1274840 1456960 2039744 2549680 2913920 4079488 5099360 10198720 20397440
- Sum of all divisors σ(n): 58017600
- Sum of proper divisors (its aliquot sum) s(n): 37620160
- 20397440 is an abundant number, because the sum of its proper divisors (37620160) is greater than itself. Its abundance is 17222720
Bases of 20397440
- Binary: 10011011100111101100000002
- Hexadecimal: 0x1373D80
- Base-36: C56RK
Squares and roots of 20397440
- 20397440 squared (203974402) is 416055558553600
- 20397440 cubed (203974403) is 8486468292263542784000
-
The
square root of 20397440 is 4516.3525105997 -
The
cube root of 20397440 is 273.2280115077
Scales and comparisons
How big is 20397440?- 20,397,440 seconds is equal to 33 weeks, 5 days, 1 hour, 57 minutes, 20 seconds.
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To count from 1 to 20,397,440 would take you about fifty 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 20397440 cubic inches would be around 22.8 feet tall.
Recreational maths with 20397440
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The information we have on file for 20397440 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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