21380985990
21,380,985,990 is an even composite number composed of seven prime numbers multiplied together.
21380985990 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of four hundred eighty divisors.
Prime factorization of 21380985990:
2 × 34 × 5 × 7 × 132 × 53 × 421
(2 × 3 × 3 × 3 × 3 × 5 × 7 × 13 × 13 × 53 × 421)See below for interesting mathematical facts about the number 21380985990 from the Numbermatics database.
Names of 21380985990
- Cardinal: 21380985990 can be written as Twenty-one billion, three hundred eighty million, nine hundred eighty-five thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 2.138098599 × 1010
Factors of 21380985990
Divisors of 21380985990
- Number of divisors d(n): 480
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Complete list of divisors:
1 2 3 5 6 7 9 10 13 14 15 18 21 26 27 30 35 39 42 45 53 54 63 65 70 78 81 90 91 105 106 117 126 130 135 159 162 169 182 189 195 210 234 265 270 273 315 318 338 351 371 378 390 405 421 455 477 507 530 546 567 585 630 689 702 742 795 810 819 842 845 910 945 954 1014 1053 1113 1134 1170 1183 1263 1365 1378 1431 1521 1590 1638 1690 1755 1855 1890 2067 2105 2106 2226 2366 2385 2457 2526 2535 2730 2835 2862 2947 3042 3339 3445 3510 3549 3710 3789 4095 4134 4210 4293 4563 4770 4823 4914 5070 5265 5473 5565 5670 5894 5915 6201 6315 6678 6890 7098 7155 7371 7578 7605 8190 8586 8841 8957 9126 9646 10017 10335 10530 10647 10946 11130 11367 11830 12285 12402 12630 13689 14310 14469 14735 14742 15210 16419 16695 17682 17745 17914 18603 18945 20034 20670 21294 21465 22313 22734 22815 24115 24570 26523 26871 27365 27378 28938 29470 30051 31005 31941 32838 33390 34101 35490 36855 37206 37890 38311 42930 43407 44205 44626 44785 45630 48230 49257 50085 53046 53235 53742 54730 55809 56835 60102 62010 62699 63882 66939 68202 68445 71149 72345 73710 76622 79569 80613 82095 86814 88410 89570 93015 95823 98514 100170 106470 111565 111618 113670 114933 125398 130221 132615 133878 134355 136890 142298 144690 147771 150255 156191 159138 159705 161226 164190 170505 186030 188097 191555 191646 200817 213447 217035 223130 229866 238707 241839 246285 260442 265230 268710 279045 290069 295542 300510 312382 313495 319410 334695 341010 344799 355745 376194 383110 390663 397845 401634 403065 426894 434070 443313 468573 477414 479115 483678 492570 498043 558090 564291 574665 580138 602451 626990 640341 651105 669390 689598 711490 725517 738855 780955 781326 795690 806130 870207 886626 937146 940485 958230 996086 1004085 1034397 1067235 1128582 1149330 1193535 1204902 1209195 1280682 1302210 1405719 1450345 1451034 1477710 1494129 1561910 1692873 1723995 1740414 1807353 1880970 1921023 1953315 2008170 2030483 2068794 2134470 2216565 2342865 2387070 2418390 2490215 2610621 2811438 2821455 2900690 2988258 3012255 3103191 3201705 3385746 3447990 3614706 3627585 3770897 3842046 3906630 4060966 4217157 4351035 4433130 4482387 4685730 4980430 5078619 5171985 5221242 5642910 5763069 6024510 6091449 6206382 6403410 7028595 7255170 7470645 7541794 7831863 8434314 8464365 8702070 8964774 9036765 9605115 10152415 10157238 10343970 11312691 11526138 12182898 12651471 13053105 13447161 14057190 14941290 15515955 15663726 16928730 18073530 18274347 18854485 19210230 20304830 21085785 22411935 22625382 23495589 25302942 25393095 26106210 26396279 26894322 28815345 30457245 31031910 33938073 36548694 37708970 39159315 40341483 42171570 44823870 46991178 50786190 52792558 54823041 56563455 57630690 60914490 63257355 67235805 67876146 78318630 79188837 80682966 91371735 101814219 109646082 113126910 117477945 126514710 131981395 134471610 158377674 164469123 169690365 182743470 201707415 203628438 234955890 237566511 263962790 274115205 305442657 328938246 339380730 395944185 403414830 475133022 509071095 548230410 610885314 712699533 791888370 822345615 1018142190 1187832555 1425399066 1527213285 1644691230 2138098599 2375665110 3054426570 3563497665 4276197198 7126995330 10690492995 21380985990
- Sum of all divisors σ(n): 72661634496
- Sum of proper divisors (its aliquot sum) s(n): 51280648506
- 21380985990 is an abundant number, because the sum of its proper divisors (51280648506) is greater than itself. Its abundance is 29899662516
Bases of 21380985990
- Binary: 100111110100110011111110100100001102
- Hexadecimal: 0x4FA67F486
- Base-36: 9TLOQDI
Squares and roots of 21380985990
- 21380985990 squared (213809859902) is 457146561904576280100
- 21380985990 cubed (213809859903) is 9774244235458413161704415799000
-
The
square root of 21380985990 is 146222.3853929349 -
The
cube root of 21380985990 is 2775.5085934135
Scales and comparisons
How big is 21380985990?- 21,380,985,990 seconds is equal to 679 years, 44 weeks, 1 day, 2 hours, 46 minutes, 30 seconds.
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To count from 1 to 21,380,985,990 would take you about one thousand, three hundred fifty-nine 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 21380985990 cubic inches would be around 231.3 feet tall.
Recreational maths with 21380985990
- 21380985990 backwards is 09958908312
- 21380985990 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21380985990's digits is 54
- More coming soon!
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