21420645246

Names of 21420645246

• Cardinal: 21420645246 can be written as Twenty-one billion, four hundred twenty million, six hundred forty-five thousand, two hundred forty-six.

Scientific notation

• Scientific notation: 2.1420645246 × 10¹⁰

Factors of 21420645246

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 223

Divisors of 21420645246

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 6 7 9 11 13 14 18 21 22 23 26 33 37 39 42 46 63 66 69 74 77 78 91 99 111 117 121 126 127 138 143 154 161 182 198 207 222 231 234 242 253 254 259 273 286 299 322 333 363 381 407 414 429 462 481 483 506 518 546 598 666 693 726 759 762 777 814 819 847 851 858 889 897 962 966 1001 1089 1143 1221 1287 1386 1397 1443 1449 1518 1554 1573 1638 1651 1694 1702 1771 1778 1794 2002 2093 2178 2277 2286 2331 2442 2541 2553 2574 2667 2691 2783 2794 2849 2886 2898 2921 3003 3146 3289 3302 3367 3542 3663 4186 4191 4329 4477 4554 4662 4699 4719 4953 5082 5106 5291 5313 5334 5382 5566 5698 5842 5957 6006 6279 6578 6734 7326 7623 7659 8001 8349 8382 8547 8658 8763 8954 9009 9361 9398 9438 9779 9867 9906 10101 10582 10626 11011 11063 11557 11914 12558 12573 13431 14097 14157 14859 15246 15318 15367 15873 15939 16002 16698 17094 17526 17871 18018 18161 18722 18837 19481 19558 19734 20202 20447 22022 22126 23023 23114 25047 25146 25641 26289 26862 28083 28194 28314 29337 29601 29718 30303 30734 31339 31746 31878 32131 32893 33033 33189 34671 35742 36179 36322 37037 37674 37973 38962 40293 40894 42291 46046 46101 47619 50094 51282 51689 52578 53613 54483 56166 58201 58443 58674 59202 60606 61087 61341 62678 64262 65527 65786 66066 66378 69069 69342 72358 74074 75946 77441 80586 84249 84582 88011 92202 94017 95238 96393 98679 99099 99567 102971 103378 104013 107226 107569 108077 108537 108966 111111 113919 116402 116886 121693 122174 122682 127127 131054 138138 138303 154882 155067 163449 168498 174603 175329 176022 183261 184023 188034 192786 196581 197358 198198 199134 199771 205942 207207 208026 215138 216154 217074 222222 224917 227838 232323 243386 253253 254254 265811 276606 282051 289179 296037 308913 310134 322707 324231 325611 326898 333333 341757 349206 350658 353441 361823 365079 366522 368046 381381 393162 399542 407407 414414 417703 427609 449834 464646 465201 506506 523809 531622 549783 564102 568579 578358 589743 592074 599313 617826 645414 648462 651222 666666 671957 674751 683514 696969 706882 720797 723646 730158 756539 759759 762762 797433 814814 835406 851851 855218 926739 930402 968121 972693 1047618 1060323 1085469 1095237 1099566 1137158 1144143 1179486 1188847 1198626 1222221 1253109 1282827 1338623 1343914 1349502 1393938 1398397 1405001 1441594 1513078 1519518 1594866 1703702 1705737 1797939 1853478 1936242 1945386 2015871 2024253 2120646 2162391 2170938 2190474 2269617 2279277 2288286 2377694 2392299 2444442 2474087 2506218 2555553 2565654 2677246 2796794 2810002 2923921 3180969 3256407 3411474 3566541 3595878 3666663 3759327 3848481 3980053 4015869 4031742 4048506 4195191 4215003 4324782 4539234 4558554 4594733 4703699 4784598 4948174 5111106 5117211 5847842 6047613 6361938 6487173 6512814 6808851 7133082 7333326 7391527 7422261 7518654 7666659 7696962 7960106 8031738 8321929 8390382 8430006 8771763 9189466 9370361 9407398 9835007 10234422 10699623 11940159 12047607 12095226 12585573 12645009 12974346 13077317 13617702 13784199 14111097 14783054 14844522 15333318 15455011 16643858 17543526 18740722 19670014 21399246 22174581 22266783 23880318 24095214 24965787 25171146 25290018 26154634 26315289 27568398 28111083 28222194 29505021 30910022 32163131 35820477 39231951 41352597 42333291 44349162 44533566 46365033 49931574 51740689 52630578 56222166 59010042 64326262 66523743 71640954 74897361 78463902 82705194 84333249 84666582 88515063 91541219 92730066 96489393 103481378 108185077 117695853 133047486 139095099 149794722 155222067 168666498 170005121 177030126 183082438 192978786 216370154 235391706 274623657 278190198 289468179 310444134 324555231 340010242 465666201 510015363 549247314 578936358 649110462 823870971 931332402 973665693 1020030726 1190035847 1530046089 1647741942 1947331386 2380071694 3060092178 3570107541 7140215082 10710322623 21420645246
• Sum of all divisors σ(n): 67817078784
• Sum of proper divisors (its aliquot sum) s(n): 46396433538
• 21420645246 is an abundant number, because the sum of its proper divisors (46396433538) is greater than itself. Its abundance is 24975788292

Bases of 21420645246

• Binary: 10011111100110001010001101101111110₂
• Hexadecimal: 0x4FCC51B7E
• Base-36: 9U9ARNI

Squares and roots of 21420645246

• 21420645246 squared (21420645246²) is 458844042754982400516
• 21420645246 cubed (21420645246³) is 9828735463094934500426723346936
• The square root of 21420645246 is 146357.9353707889
• The cube root of 21420645246 is 2777.2236159321

Scales and comparisons

• 21,420,645,246 seconds is equal to 681 years, 5 weeks, 5 days, 3 hours, 14 minutes, 6 seconds.
• To count from 1 to 21,420,645,246 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 21420645246 cubic inches would be around 231.4 feet tall.

Recreational maths with 21420645246

• 21420645246 backwards is 64254602412
• The number of decimal digits it has is: 11
• The sum of 21420645246's digits is 36
• More coming soon!