21084882390

Names of 21084882390

• Cardinal: 21084882390 can be written as Twenty-one billion, eighty-four million, eight hundred eighty-two thousand, three hundred ninety.

Scientific notation

• Scientific notation: 2.108488239 × 10¹⁰

Factors of 21084882390

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 6340

Divisors of 21084882390

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 5 6 9 10 11 13 15 18 22 26 27 29 30 33 39 45 54 55 58 65 66 78 81 87 90 99 110 117 130 135 143 145 162 165 174 195 198 234 261 270 286 290 297 319 330 351 377 390 405 429 435 495 522 585 594 638 702 715 754 783 810 858 870 891 957 990 1053 1131 1170 1287 1305 1430 1485 1566 1595 1755 1782 1885 1914 2106 2145 2262 2349 2574 2610 2871 2970 3190 3393 3510 3770 3861 3915 4147 4290 4455 4698 4785 5265 5655 5742 6277 6435 6786 7722 7830 8294 8613 8910 9570 10179 10530 11310 11583 11745 12441 12554 12870 14355 16965 17226 18831 19305 20358 20735 23166 23490 24882 25839 28710 30537 31385 33930 37323 37662 38610 41470 43065 50895 51678 56493 57915 61074 62205 62770 69047 74646 81601 86130 94155 101790 111969 112986 115830 124410 129195 138094 152685 163202 169479 182033 186615 188310 207141 223938 244803 258390 282465 305370 335907 338958 345235 364066 373230 408005 414282 489606 508437 546099 559845 564930 621423 671814 690470 734409 816010 847395 897611 910165 1016874 1035705 1092198 1119690 1224015 1242846 1468818 1638297 1679535 1694790 1795222 1820330 1864269 2002363 2071410 2203227 2366429 2448030 2542185 2692833 2730495 3107115 3276594 3359070 3672045 3728538 4004726 4406454 4488055 4732858 4914891 5084370 5385666 5460990 5592807 6007089 6214230 6609681 7099287 7344090 8078499 8191485 8976110 9321345 9829782 10011815 11016135 11185614 11832145 12014178 13219362 13464165 14198574 14744673 16156998 16382970 18021267 18642690 20023630 21297861 22032270 23664290 24235497 24574455 26030719 26928330 27964035 29489346 30035445 33048405 35496435 36042534 40392495 42595722 48470994 49148910 52061438 54063801 55928070 60070890 63893583 66096810 70992870 72706491 73723365 78092157 80784990 90106335 106489305 108127602 121177485 127787166 130153595 145412982 147446730 156184314 162191403 180212670 191680749 212978610 234276471 242354970 260307190 270319005 319467915 324382806 363532455 383361498 390460785 468552942 540638010 638935830 702829413 727064910 780921570 810957015 958403745 1171382355 1405658826 1621914030 1916807490 2108488239 2342764710 3514147065 4216976478 7028294130 10542441195 21084882390
• Sum of all divisors σ(n): 68914359360
• Sum of proper divisors (its aliquot sum) s(n): 47829476970
• 21084882390 is an abundant number, because the sum of its proper divisors (47829476970) is greater than itself. Its abundance is 26744594580

Bases of 21084882390

• Binary: 10011101000110000011100010111010110₂
• Hexadecimal: 0x4E8C1C5D6
• Base-36: 9OPE7DI

Squares and roots of 21084882390

• 21084882390 squared (21084882390²) is 444572265400132112100
• 21084882390 cubed (21084882390³) is 9373753929817651874090795919000
• The square root of 21084882390 is 145206.3441795847
• The cube root of 21084882390 is 2762.6363868427

Scales and comparisons

• 21,084,882,390 seconds is equal to 670 years, 22 weeks, 3 days, 23 hours, 46 minutes, 30 seconds.
• To count from 1 to 21,084,882,390 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 21084882390 cubic inches would be around 230.2 feet tall.

Recreational maths with 21084882390

• 21084882390 backwards is 09328848012
• 21084882390 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21084882390's digits is 45
• More coming soon!