21028356720
21,028,356,720 is an even composite number composed of six prime numbers multiplied together.
21028356720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred sixty divisors.
Prime factorization of 21028356720:
24 × 32 × 5 × 7 × 172 × 14437
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 17 × 17 × 14437)See below for interesting mathematical facts about the number 21028356720 from the Numbermatics database.
Names of 21028356720
- Cardinal: 21028356720 can be written as Twenty-one billion, twenty-eight million, three hundred fifty-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.102835672 × 1010
Factors of 21028356720
Divisors of 21028356720
- 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 17 18 20 21 24 28 30 34 35 36 40 42 45 48 51 56 60 63 68 70 72 80 84 85 90 102 105 112 119 120 126 136 140 144 153 168 170 180 204 210 238 240 252 255 272 280 289 306 315 336 340 357 360 408 420 476 504 510 560 578 595 612 630 680 714 720 765 816 840 867 952 1008 1020 1071 1156 1190 1224 1260 1360 1428 1445 1530 1680 1734 1785 1904 2023 2040 2142 2312 2380 2448 2520 2601 2856 2890 3060 3468 3570 4046 4080 4284 4335 4624 4760 5040 5202 5355 5712 5780 6069 6120 6936 7140 8092 8568 8670 9520 10115 10404 10710 11560 12138 12240 13005 13872 14280 14437 16184 17136 17340 18207 20230 20808 21420 23120 24276 26010 28560 28874 30345 32368 34680 36414 40460 41616 42840 43311 48552 52020 57748 60690 69360 72185 72828 80920 85680 86622 91035 97104 101059 104040 115496 121380 129933 144370 145656 161840 173244 182070 202118 208080 216555 230992 242760 245429 259866 288740 291312 303177 346488 364140 404236 433110 485520 490858 505295 519732 577480 606354 649665 692976 728280 736287 808472 866220 909531 981716 1010590 1039464 1154960 1212708 1227145 1299330 1456560 1472574 1515885 1616944 1718003 1732440 1819062 1963432 2021180 2078928 2208861 2425416 2454290 2598660 2945148 3031770 3436006 3464880 3638124 3681435 3926864 4042360 4172293 4417722 4547655 4850832 4908580 5154009 5197320 5890296 6063540 6872012 7276248 7362870 8084720 8344586 8590015 8835444 9095310 9817160 10308018 10394640 11044305 11780592 12127080 12516879 13744024 14552496 14725740 15462027 16689172 17180030 17670888 18190620 19634320 20616036 20861465 22088610 24254160 25033758 25770045 27488048 29206051 29451480 30924054 33378344 34360060 35341776 36381240 37550637 41232072 41722930 44177220 50067516 51540090 58412102 58902960 61848108 62584395 66756688 68720120 72762480 75101274 77310135 82464144 83445860 87618153 88354440 100135032 103080180 116824204 123696216 125168790 137440240 146030255 150202548 154620270 166891720 175236306 176708880 187753185 200270064 206160360 233648408 247392432 250337580 262854459 292060510 300405096 309240540 333783440 350472612 375506370 412320720 438090765 467296816 500675160 525708918 584121020 600810192 618481080 700945224 751012740 876181530 1001350320 1051417836 1168242040 1236962160 1314272295 1401890448 1502025480 1752363060 2102835672 2336484080 2628544590 3004050960 3504726120 4205671344 5257089180 7009452240 10514178360 21028356720
- Sum of all divisors σ(n): 85741622304
- Sum of proper divisors (its aliquot sum) s(n): 64713265584
- 21028356720 is an abundant number, because the sum of its proper divisors (64713265584) is greater than itself. Its abundance is 43684908864
Bases of 21028356720
- Binary: 100111001010110001101000010011100002
- Hexadecimal: 0x4E5634270
- Base-36: 9NRQNW0
Squares and roots of 21028356720
- 21028356720 squared (210283567202) is 442191786343569158400
- 21028356720 cubed (210283567203) is 9298566621886596740825384448000
-
The
square root of 21028356720 is 145011.5744345947 -
The
cube root of 21028356720 is 2760.1654280177
Scales and comparisons
How big is 21028356720?- 21,028,356,720 seconds is equal to 668 years, 33 weeks, 18 hours, 12 minutes.
-
To count from 1 to 21,028,356,720 would take you about one thousand, three hundred thirty-seven 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 21028356720 cubic inches would be around 230 feet tall.
Recreational maths with 21028356720
- 21028356720 backwards is 02765382012
- 21028356720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21028356720's digits is 36
- More coming soon!
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The information we have on file for 21028356720 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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