21078128610

Names of 21078128610

• Cardinal: 21078128610 can be written as Twenty-one billion, seventy-eight million, one hundred twenty-eight thousand, six hundred ten.

Scientific notation

• Scientific notation: 2.107812861 × 10¹⁰

Factors of 21078128610

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 47

Divisors of 21078128610

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 5 6 7 9 10 11 14 15 18 19 21 22 27 30 33 35 38 42 45 49 54 55 57 63 66 70 77 81 90 95 98 99 105 110 114 121 126 133 135 147 154 162 165 171 189 190 198 209 210 231 242 243 245 266 270 285 294 297 315 330 342 343 363 378 385 399 405 418 441 462 486 490 495 513 539 567 570 594 605 627 630 665 686 693 726 735 770 798 810 847 855 882 891 931 945 990 1026 1029 1045 1078 1089 1134 1155 1197 1210 1215 1254 1323 1330 1331 1386 1463 1470 1485 1539 1617 1694 1701 1710 1715 1782 1815 1862 1881 1890 1995 2058 2079 2090 2178 2205 2299 2310 2394 2430 2541 2565 2646 2662 2673 2695 2793 2835 2926 2970 3078 3087 3135 3234 3267 3402 3430 3465 3591 3630 3762 3773 3969 3990 3993 4158 4235 4389 4410 4455 4598 4617 4655 4851 5082 5130 5145 5346 5390 5445 5586 5643 5670 5929 5985 6174 6237 6270 6517 6534 6615 6655 6897 6930 7182 7315 7546 7623 7695 7938 7986 8085 8379 8470 8505 8778 8910 9234 9261 9310 9317 9405 9702 9801 10241 10290 10395 10773 10890 11286 11319 11495 11858 11907 11970 11979 12474 12705 13034 13167 13230 13310 13365 13794 13965 14553 14630 15246 15390 15435 16093 16170 16335 16758 16929 17010 17787 17955 18522 18634 18711 18810 18865 19551 19602 19845 19965 20482 20691 20790 21546 21945 22638 22869 22990 23085 23814 23958 24255 25137 25289 25410 26334 26730 27783 27930 27951 28215 29106 29403 29645 30723 30870 31185 32186 32319 32585 32670 33858 33957 34485 35574 35910 35937 37422 37730 38115 39102 39501 39690 39930 41382 41503 41895 43659 43890 45738 46170 46305 46585 48279 48510 49005 50274 50578 50787 51205 53361 53865 55566 55902 56430 56595 58653 58806 59290 59535 59895 61446 62073 62370 64638 65170 65219 65835 67914 68607 68970 71687 71874 72765 75411 75867 76230 79002 80465 83006 83349 83790 83853 84645 87318 88935 92169 92610 93170 93555 96558 97755 98010 101574 101871 102410 103455 106722 107730 107811 112651 113190 114345 117306 118503 119070 119790 124146 124509 125685 126445 130438 130977 131670 137214 138915 139755 143374 144837 145530 147015 150822 151734 153615 160083 160930 161595 166698 167706 169290 169785 175959 177023 177870 179685 184338 186219 187110 195510 195657 197505 203742 205821 206910 207515 215061 215622 218295 225302 226233 227601 228690 237006 241395 249018 251370 251559 252890 253935 261954 266805 276507 277830 279510 289674 293265 294030 305613 307230 310365 320166 323190 323433 326095 337953 339570 343035 351918 354046 355509 358435 359370 372438 373527 377055 379335 391314 395010 411642 415030 416745 419265 430122 434511 436590 452466 455202 456533 460845 480249 482790 503118 507870 509355 527877 531069 533610 539055 553014 558657 563255 586530 586971 592515 611226 620730 622545 645183 646866 652190 654885 675906 682803 686070 711018 716870 724185 747054 754110 754677 758670 788557 800415 829521 833490 838530 869022 879795 885115 913066 916839 921690 931095 960498 978285 1013859 1018710 1029105 1055754 1062138 1075305 1078110 1117314 1120581 1126510 1131165 1138005 1173942 1185030 1239161 1245090 1257795 1290366 1303533 1309770 1365606 1369599 1382535 1440747 1448370 1509354 1528065 1577114 1583631 1593207 1600830 1617165 1659042 1689765 1759590 1760913 1770230 1777545 1833678 1862190 1867635 1935549 1956570 2027718 2048409 2058210 2150610 2172555 2241162 2262330 2264031 2276010 2282665 2365671 2401245 2478322 2488563 2515590 2607066 2639385 2655345 2739198 2765070 2793285 2881494 2934855 3041577 3056130 3167262 3186414 3225915 3234330 3361743 3379530 3414015 3521826 3555090 3717483 3735270 3773385 3871098 3910599 3942785 4096818 4108797 4147605 4345110 4528062 4565330 4584195 4731342 4779621 4802490 4977126 5069295 5278770 5282739 5310690 5586570 5602905 5806647 5869710 6083154 6145227 6195805 6451830 6517665 6723486 6828030 6847995 7097013 7203735 7434966 7546770 7821198 7885570 7918155 7966035 8217594 8295210 8674127 8804565 9124731 9168390 9559242 9677745 10085229 10138590 10242045 10565478 11152449 11205810 11320155 11613294 11828355 12290454 12326391 12391610 12442815 13035330 13695990 14194026 14338863 14407470 15207885 15836310 15848217 15932070 16808715 17348254 17419941 17609130 18249462 18587415 19355490 19552995 20170458 20484090 20543985 21291039 22304898 22640310 23656710 23898105 24652782 24885630 26022381 26413695 27374193 28677726 29033235 30415770 30726135 31696434 33457347 33617430 34839882 35485065 36979173 37174830 39105990 41087970 42582078 43016589 43370635 45623655 47796210 50426145 52044762 52827390 54748386 55762245 58066470 61452270 61631955 63873117 66914694 70970130 71694315 73958346 78067143 79241085 86033178 86741270 87099705 91247310 100372041 100852290 106455195 110937519 111524490 123263910 127746234 130111905 136870965 143388630 156134286 158482170 167286735 174199410 184895865 191619351 200744082 212910390 215082945 221875038 234201429 260223810 273741930 301116123 319365585 334573470 369791730 383238702 390335715 430165890 468402858 501860205 554687595 602232246 638731170 702604287 780671430 958096755 1003720410 1109375190 1171007145 1405208574 1505580615 1916193510 2107812861 2342014290 3011161230 3513021435 4215625722 7026042870 10539064305 21078128610
• Sum of all divisors σ(n): 76737024000
• Sum of proper divisors (its aliquot sum) s(n): 55658895390
• 21078128610 is an abundant number, because the sum of its proper divisors (55658895390) is greater than itself. Its abundance is 34580766780

Bases of 21078128610

• Binary: 10011101000010110101011011111100010₂
• Hexadecimal: 0x4E85AB7E2
• Base-36: 9OLDG4I

Squares and roots of 21078128610

• 21078128610 squared (21078128610²) is 444287505699700532100
• 21078128610 cubed (21078128610³) is 9364749184954395854089233381000
• The square root of 21078128610 is 145183.0865149243
• The cube root of 21078128610 is 2762.3413851043

Scales and comparisons

• 21,078,128,610 seconds is equal to 670 years, 11 weeks, 2 days, 19 hours, 43 minutes, 30 seconds.
• To count from 1 to 21,078,128,610 would take you about one thousand, three hundred forty 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 21078128610 cubic inches would be around 230.2 feet tall.

Recreational maths with 21078128610

• 21078128610 backwards is 01682187012
• The number of decimal digits it has is: 11
• The sum of 21078128610's digits is 36
• More coming soon!