21428057728
21,428,057,728 is an even composite number composed of seven prime numbers multiplied together.
21428057728 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of five hundred twelve divisors.
Prime factorization of 21428057728:
27 × 7 × 11 × 17 × 19 × 53 × 127
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 11 × 17 × 19 × 53 × 127)See below for interesting mathematical facts about the number 21428057728 from the Numbermatics database.
Names of 21428057728
- Cardinal: 21428057728 can be written as Twenty-one billion, four hundred twenty-eight million, fifty-seven thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1428057728 × 1010
Factors of 21428057728
Divisors of 21428057728
- Number of divisors d(n): 512
-
Complete list of divisors:
1 2 4 7 8 11 14 16 17 19 22 28 32 34 38 44 53 56 64 68 76 77 88 106 112 119 127 128 133 136 152 154 176 187 209 212 224 238 254 266 272 304 308 323 352 371 374 418 424 448 476 508 532 544 583 608 616 646 704 742 748 836 848 889 896 901 952 1007 1016 1064 1088 1166 1216 1232 1292 1309 1397 1408 1463 1484 1496 1672 1696 1778 1802 1904 2014 2032 2128 2159 2176 2261 2332 2413 2432 2464 2584 2618 2794 2926 2968 2992 3344 3392 3553 3556 3604 3808 4028 4064 4081 4256 4318 4522 4664 4826 4928 5168 5236 5588 5852 5936 5984 6307 6688 6731 6784 7049 7106 7112 7208 7616 8056 8128 8162 8512 8636 9044 9328 9652 9779 9856 9911 10336 10472 11077 11176 11704 11872 11968 12614 13376 13462 14098 14212 14224 14416 15113 15232 16112 16256 16324 16891 17024 17119 17272 18088 18656 19304 19558 19822 20672 20944 22154 22352 23408 23744 23749 23936 24871 25228 26543 26752 26924 28196 28424 28448 28832 30226 32224 32648 33782 34238 34544 36176 37312 38608 39116 39644 41021 41344 41888 44308 44704 46816 47117 47488 47498 49742 50456 53086 53848 56392 56848 56896 57664 60452 64448 65296 67564 68476 69088 69377 72352 74041 74624 77216 77539 78232 79288 82042 83776 88616 89408 93632 94234 94996 99484 100912 106172 107696 112784 113696 113792 114427 115328 119833 120904 127889 128896 130592 135128 136952 138176 138754 144704 148082 154432 155078 156464 158576 164084 166243 167552 177232 178816 185801 187264 188309 188468 189992 198968 201824 212344 215392 225568 227392 228854 239666 241808 255778 261184 270256 273904 276352 277508 287147 289408 296164 308864 310156 312928 317152 328168 332486 354464 371602 376618 376936 379984 397936 403648 424688 430784 451136 451231 454784 457708 479332 483616 511556 518287 522368 540512 547808 555016 574294 592328 620312 625856 634304 656336 664972 708928 743204 753236 753872 759968 795872 800989 807296 849376 861568 895223 902272 902462 915416 958664 967232 1023112 1036574 1081024 1095616 1110032 1148588 1184656 1240624 1251712 1258697 1268608 1312672 1318163 1329944 1406779 1417856 1486408 1506472 1507744 1519936 1591744 1601978 1698752 1790446 1804924 1830832 1917328 1934464 2046224 2073148 2162048 2174113 2191232 2220064 2297176 2369312 2481248 2517394 2625344 2636326 2659888 2813558 2972816 3012944 3015488 3039872 3158617 3183488 3203956 3397504 3580892 3609848 3661664 3834656 4092448 4146296 4348226 4440128 4594352 4738624 4962496 5034788 5250688 5272652 5319776 5627116 5945632 6025888 6030976 6317234 6407912 7161784 7219696 7323328 7669312 8184896 8292592 8696452 8810879 8880256 9188704 9477248 9847453 9924992 10069576 10545304 10639552 11254232 11891264 12051776 12634468 12815824 14323568 14439392 14646656 15218791 15338624 16369792 16585184 17392904 17621758 18377408 19694906 20139152 21090608 21279104 22508464 23782528 23915243 24103552 25268936 25631648 28647136 28878784 30437582 33170368 34785808 35243516 36754816 39389812 40278304 42181216 45016928 47830486 50537872 51263296 57294272 57757568 60875164 66340736 69571616 70487032 78779624 80556608 84362432 90033856 95660972 101075744 102526592 114588544 121750328 139143232 140974064 157559248 161113216 167406701 168724864 180067712 191321944 202151488 243500656 278286464 281948128 315118496 334813402 382643888 404302976 487001312 563896256 630236992 669626804 765287776 974002624 1127792512 1260473984 1339253608 1530575552 1948005248 2678507216 3061151104 5357014432 10714028864 21428057728
- Sum of all divisors σ(n): 60914073600
- Sum of proper divisors (its aliquot sum) s(n): 39486015872
- 21428057728 is an abundant number, because the sum of its proper divisors (39486015872) is greater than itself. Its abundance is 18057958144
Bases of 21428057728
- Binary: 100111111010011011000110110100000002
- Hexadecimal: 0x4FD363680
- Base-36: 9UDPN5S
Squares and roots of 21428057728
- 21428057728 squared (214280577282) is 459161657994500521984
- 21428057728 cubed (214280577283) is 9838942513990349891599285092352
-
The
square root of 21428057728 is 146383.2563102761 -
The
cube root of 21428057728 is 2777.5439260149
Scales and comparisons
How big is 21428057728?- 21,428,057,728 seconds is equal to 681 years, 17 weeks, 6 days, 22 hours, 15 minutes, 28 seconds.
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To count from 1 to 21,428,057,728 would take you about one thousand, three hundred sixty-two 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 21428057728 cubic inches would be around 231.5 feet tall.
Recreational maths with 21428057728
- 21428057728 backwards is 82775082412
- The number of decimal digits it has is: 11
- The sum of 21428057728's digits is 46
- More coming soon!
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