20387017728
20,387,017,728 is an even composite number composed of five prime numbers multiplied together.
20387017728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred sixty-four divisors.
Prime factorization of 20387017728:
210 × 32 × 7 × 11 × 28729
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 7 × 11 × 28729)See below for interesting mathematical facts about the number 20387017728 from the Numbermatics database.
Names of 20387017728
- Cardinal: 20387017728 can be written as Twenty billion, three hundred eighty-seven million, seventeen thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.0387017728 × 1010
Factors of 20387017728
Divisors of 20387017728
- Number of divisors d(n): 264
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Complete list of divisors:
1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 28 32 33 36 42 44 48 56 63 64 66 72 77 84 88 96 99 112 126 128 132 144 154 168 176 192 198 224 231 252 256 264 288 308 336 352 384 396 448 462 504 512 528 576 616 672 693 704 768 792 896 924 1008 1024 1056 1152 1232 1344 1386 1408 1536 1584 1792 1848 2016 2112 2304 2464 2688 2772 2816 3072 3168 3584 3696 4032 4224 4608 4928 5376 5544 5632 6336 7168 7392 8064 8448 9216 9856 10752 11088 11264 12672 14784 16128 16896 19712 21504 22176 25344 28729 29568 32256 33792 39424 44352 50688 57458 59136 64512 78848 86187 88704 101376 114916 118272 172374 177408 201103 229832 236544 258561 316019 344748 354816 402206 459664 517122 603309 632038 689496 709632 804412 919328 948057 1034244 1206618 1264076 1378992 1608824 1809927 1838656 1896114 2068488 2212133 2413236 2528152 2757984 2844171 3217648 3619854 3677312 3792228 4136976 4424266 4826472 5056304 5515968 5688342 6435296 6636399 7239708 7354624 7584456 8273952 8848532 9652944 10112608 11031936 11376684 12870592 13272798 14479416 14709248 15168912 16547904 17697064 19305888 19909197 20225216 22063872 22753368 25741184 26545596 28958832 29418496 30337824 33095808 35394128 38611776 39818394 40450432 44127744 45506736 51482368 53091192 57917664 60675648 66191616 70788256 77223552 79636788 80900864 88255488 91013472 102964736 106182384 115835328 121351296 132383232 141576512 154447104 159273576 161801728 182026944 205929472 212364768 231670656 242702592 264766464 283153024 308894208 318547152 323603456 364053888 424729536 463341312 485405184 566306048 617788416 637094304 728107776 849459072 926682624 970810368 1132612096 1274188608 1456215552 1698918144 1853365248 2265224192 2548377216 2912431104 3397836288 5096754432 6795672576 10193508864 20387017728
- Sum of all divisors σ(n): 73395266880
- Sum of proper divisors (its aliquot sum) s(n): 53008249152
- 20387017728 is an abundant number, because the sum of its proper divisors (53008249152) is greater than itself. Its abundance is 32621231424
Bases of 20387017728
- Binary: 100101111110010100100110100000000002
- Hexadecimal: 0x4BF293400
- Base-36: 9D5WJK0
Squares and roots of 20387017728
- 20387017728 squared (203870177282) is 415630491841786281984
- 20387017728 cubed (203870177283) is 8473466205475856301995015012352
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The
square root of 20387017728 is 142783.1142957737 -
The
cube root of 20387017728 is 2731.8146740201
Scales and comparisons
How big is 20387017728?- 20,387,017,728 seconds is equal to 648 years, 12 weeks, 4 days, 20 hours, 28 minutes, 48 seconds.
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To count from 1 to 20,387,017,728 would take you about one thousand, two hundred ninety-six years!
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 20387017728 cubic inches would be around 227.7 feet tall.
Recreational maths with 20387017728
- 20387017728 backwards is 82771078302
- The number of decimal digits it has is: 11
- The sum of 20387017728's digits is 45
- More coming soon!
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