21428793386

Names of 21428793386

• Cardinal: 21428793386 can be written as Twenty-one billion, four hundred twenty-eight million, seven hundred ninety-three thousand, three hundred eighty-six.

Scientific notation

• Scientific notation: 2.1428793386 × 10¹⁰

Factors of 21428793386

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 87

Divisors of 21428793386

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 7 11 13 14 17 22 26 34 37 49 74 77 91 98 119 121 143 154 169 182 187 221 238 242 259 286 289 338 374 407 442 481 518 539 578 629 637 814 833 847 962 1001 1078 1183 1258 1274 1309 1547 1573 1666 1694 1813 1859 2002 2023 2057 2366 2431 2618 2849 2873 3094 3146 3179 3367 3626 3718 3757 4046 4114 4403 4477 4862 5291 5698 5746 5929 6253 6358 6734 6919 7007 7514 8177 8281 8806 8954 9163 10582 10693 10829 11011 11858 12506 13013 13838 14014 14161 14399 16354 16562 17017 18326 19943 20111 20449 21386 21658 22022 22253 23569 26026 26299 26741 28322 28798 30821 31339 31603 34034 34969 37037 39886 40222 40898 41327 43771 44506 47138 48433 48841 52598 53482 57239 58201 61642 62678 63206 68783 69938 74074 74851 76109 77077 82654 87542 89947 91091 96866 97682 100793 106301 114478 116402 117623 119119 137566 139009 140777 143143 149702 152218 154154 155771 179894 182182 184093 187187 201586 212602 219373 221221 235246 238238 244783 259259 278018 281554 286286 289289 306397 311542 339031 341887 347633 368186 374374 400673 407407 438746 442442 454597 481481 489566 518518 523957 532763 537251 578578 612794 629629 678062 683774 695266 744107 756613 801346 814814 823361 909194 962962 973063 989417 1002001 1047914 1065526 1074502 1169311 1259258 1293853 1310309 1488214 1513226 1529099 1548547 1646722 1713481 1807117 1946126 1978834 2004002 2025023 2338622 2393209 2433431 2587706 2620618 2851849 3058198 3097094 3182179 3370367 3426962 3614234 3729341 3760757 4050046 4407403 4786418 4866862 5208749 5296291 5703698 5763527 5909761 6364358 6740734 6811441 6925919 7458682 7521514 8185177 8814806 9056971 10417498 10592582 10703693 11527054 11819522 12649819 12862421 13622882 13851838 16370354 16820089 17034017 18113942 19878287 21407386 22275253 25299638 25724842 26325299 33640178 34068034 37074037 39756574 41368327 44550506 48481433 52650598 57296239 63398797 74148074 74925851 82736654 88548733 90036947 96962866 114592478 117740623 126797594 139148009 149851702 177097466 180073894 218661157 235481246 278296018 289578289 437322314 579156578 630258629 824184361 974036063 1260517258 1530628099 1648368722 1948072126 3061256198 10714396693 21428793386
• Sum of all divisors σ(n): 48553530354
• Sum of proper divisors (its aliquot sum) s(n): 27124736968
• 21428793386 is an abundant number, because the sum of its proper divisors (27124736968) is greater than itself. Its abundance is 5695943582

Bases of 21428793386

• Binary: 10011111101010000010111000000101010₂
• Hexadecimal: 0x4FD41702A
• Base-36: 9UE5ESQ

Squares and roots of 21428793386

• 21428793386 squared (21428793386²) is 459193185979877344996
• 21428793386 cubed (21428793386³) is 9839955906621863579541524996456
• The square root of 21428793386 is 146385.7690692643
• The cube root of 21428793386 is 2777.5757114283

Scales and comparisons

• 21,428,793,386 seconds is equal to 681 years, 19 weeks, 1 day, 10 hours, 36 minutes, 26 seconds.
• To count from 1 to 21,428,793,386 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 21428793386 cubic inches would be around 231.5 feet tall.

Recreational maths with 21428793386

• 21428793386 backwards is 68339782412
• The number of decimal digits it has is: 11
• The sum of 21428793386's digits is 53
• More coming soon!