21128038400
21,128,038,400 is an even composite number composed of five prime numbers multiplied together.
21128038400 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21128038400:
211 × 52 × 7 × 167 × 353
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 167 × 353)See below for interesting mathematical facts about the number 21128038400 from the Numbermatics database.
Names of 21128038400
- Cardinal: 21128038400 can be written as Twenty-one billion, one hundred twenty-eight million, thirty-eight thousand, four hundred.
Scientific notation
- Scientific notation: 2.11280384 × 1010
Factors of 21128038400
Divisors of 21128038400
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 50 56 64 70 80 100 112 128 140 160 167 175 200 224 256 280 320 334 350 353 400 448 512 560 640 668 700 706 800 835 896 1024 1120 1169 1280 1336 1400 1412 1600 1670 1765 1792 2048 2240 2338 2471 2560 2672 2800 2824 3200 3340 3530 3584 4175 4480 4676 4942 5120 5344 5600 5648 5845 6400 6680 7060 7168 8350 8825 8960 9352 9884 10240 10688 11200 11296 11690 12355 12800 13360 14120 14336 16700 17650 17920 18704 19768 21376 22400 22592 23380 24710 25600 26720 28240 29225 33400 35300 35840 37408 39536 42752 44800 45184 46760 49420 51200 53440 56480 58450 58951 61775 66800 70600 71680 74816 79072 85504 89600 90368 93520 98840 106880 112960 116900 117902 123550 133600 141200 149632 158144 171008 179200 180736 187040 197680 213760 225920 233800 235804 247100 267200 282400 294755 299264 316288 342016 358400 361472 374080 395360 412657 427520 451840 467600 471608 494200 534400 564800 589510 598528 632576 722944 748160 790720 825314 855040 903680 935200 943216 988400 1068800 1129600 1179020 1197056 1265152 1473775 1496320 1581440 1650628 1710080 1807360 1870400 1886432 1976800 2063285 2137600 2259200 2358040 2394112 2530304 2947550 2992640 3162880 3301256 3614720 3740800 3772864 3953600 4126570 4275200 4518400 4716080 5060608 5895100 5985280 6325760 6602512 7481600 7545728 7907200 8253140 8550400 9036800 9432160 10316425 11790200 11970560 12651520 13205024 14963200 15091456 15814400 16506280 18073600 18864320 20632850 23580400 25303040 26410048 29926400 30182912 31628800 33012560 37728640 41265700 47160800 52820096 59852800 60365824 63257600 66025120 75457280 82531400 94321600 105640192 120731648 126515200 132050240 150914560 165062800 188643200 211280384 264100480 301829120 330125600 377286400 422560768 528200960 603658240 660251200 754572800 845121536 1056401920 1320502400 1509145600 2112803840 2641004800 3018291200 4225607680 5282009600 10564019200 21128038400
- Sum of all divisors σ(n): 60397384320
- Sum of proper divisors (its aliquot sum) s(n): 39269345920
- 21128038400 is an abundant number, because the sum of its proper divisors (39269345920) is greater than itself. Its abundance is 18141307520
Bases of 21128038400
- Binary: 100111010110101010001001000000000002
- Hexadecimal: 0x4EB544800
- Base-36: 9PF36RK
Squares and roots of 21128038400
- 21128038400 squared (211280384002) is 446394006631874560000
- 21128038400 cubed (211280384003) is 9431429713648100367663104000000
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The
square root of 21128038400 is 145354.8705754299 -
The
cube root of 21128038400 is 2764.5199340511
Scales and comparisons
How big is 21128038400?- 21,128,038,400 seconds is equal to 671 years, 41 weeks, 6 days, 11 hours, 33 minutes, 20 seconds.
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To count from 1 to 21,128,038,400 would take you about one thousand, three hundred forty-three 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 21128038400 cubic inches would be around 230.4 feet tall.
Recreational maths with 21128038400
- 21128038400 backwards is 00483082112
- The number of decimal digits it has is: 11
- The sum of 21128038400's digits is 29
- More coming soon!
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