21473578728

Names of 21473578728

• Cardinal: 21473578728 can be written as Twenty-one billion, four hundred seventy-three million, five hundred seventy-eight thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1473578728 × 10¹⁰

Factors of 21473578728

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 726

Divisors of 21473578728

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 28 29 31 36 42 56 58 62 63 72 83 84 87 93 116 124 126 166 168 174 186 203 217 232 248 249 252 261 279 332 348 372 406 434 498 504 522 558 571 581 609 651 664 696 744 747 812 868 899 996 1044 1116 1142 1162 1218 1302 1494 1624 1713 1736 1743 1798 1827 1953 1992 2088 2232 2284 2324 2407 2436 2573 2604 2697 2988 3426 3486 3596 3654 3906 3997 4568 4648 4814 4872 5139 5146 5208 5229 5394 5976 6293 6852 6972 7192 7221 7308 7719 7812 7994 8091 9628 10278 10292 10458 10788 11991 12586 13704 13944 14442 14616 15438 15624 15988 16182 16559 16849 17701 18011 18879 19256 20556 20584 20916 21576 21663 23157 23982 25172 28884 30876 31976 32364 33118 33698 35402 35973 36022 37758 41112 41832 43326 46314 47393 47964 49677 50344 50547 53103 54033 56637 57768 61752 64728 66236 67396 70804 71946 72044 74617 75516 86652 92628 94786 95928 99354 101094 106206 108066 113274 115913 123907 132472 134792 141608 142179 143892 144088 149031 149234 151032 151641 159309 162099 173304 185256 189572 198708 202188 212412 216132 223851 226548 231826 247814 284358 287784 298062 298468 303282 318618 324198 331751 347739 371721 379144 397416 404376 424824 426537 432264 447702 453096 463652 495628 513329 522319 568716 596124 596936 606564 637236 648396 663502 671553 695478 743442 853074 895404 927304 991256 995253 1026658 1043217 1044638 1115163 1137432 1192248 1213128 1274472 1296792 1327004 1343106 1374397 1390956 1469183 1486884 1539987 1566957 1706148 1790808 1990506 2053316 2086434 2089276 2230326 2654008 2686212 2748794 2781912 2938366 2973768 2985759 3079974 3133914 3412296 3593303 3981012 4106632 4123191 4172868 4178552 4407549 4460652 4619961 4700871 5372424 5497588 5876732 5971518 6159948 6267828 7186606 7962024 8246382 8345736 8815098 8921304 9239922 9401742 9620779 10284281 10779909 10995176 11753464 11943036 12319896 12369573 12535656 13222647 14373212 16492764 17630196 18479844 18803484 19241558 20568562 21559818 23886072 24739146 26445294 28746424 28862337 30852843 32339727 32985528 35260392 36959688 37606968 38483116 41137124 42606307 43119636 49478292 52890588 57724674 61705686 64679454 76966232 82274248 85212614 86239272 86587011 92558529 98956584 105781176 115449348 123411372 127818921 129358908 170425228 173174022 185117058 230898696 246822744 255637842 258717816 298244149 340850456 346348044 370234116 383456763 511275684 596488298 692696088 740468232 766913526 894732447 1022551368 1192976596 1533827052 1789464894 2385953192 2684197341 3067654104 3578929788 5368394682 7157859576 10736789364 21473578728
• Sum of all divisors σ(n): 71956684800
• Sum of proper divisors (its aliquot sum) s(n): 50483106072
• 21473578728 is an abundant number, because the sum of its proper divisors (50483106072) is greater than itself. Its abundance is 29009527344

Bases of 21473578728

• Binary: 10011111111111011001100111011101000₂
• Hexadecimal: 0x4FFECCEE8
• Base-36: 9V4TBE0

Squares and roots of 21473578728

• 21473578728 squared (21473578728²) is 461114583387614097984
• 21473578728 cubed (21473578728³) is 9901780309002852273142130084352
• The square root of 21473578728 is 146538.6594998057
• The cube root of 21473578728 is 2779.5093732449

Scales and comparisons

• 21,473,578,728 seconds is equal to 682 years, 41 weeks, 1 day, 18 hours, 58 minutes, 48 seconds.
• To count from 1 to 21,473,578,728 would take you about one thousand, three hundred sixty-five 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 21473578728 cubic inches would be around 231.6 feet tall.

Recreational maths with 21473578728

• 21473578728 backwards is 82787537412
• The number of decimal digits it has is: 11
• The sum of 21473578728's digits is 54
• More coming soon!