642642530820

Names of 642642530820

• Cardinal: 642642530820 can be written as Six hundred forty-two billion, six hundred forty-two million, five hundred thirty thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 6.4264253082 × 10¹¹

Factors of 642642530820

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 705

Divisors of 642642530820

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 31 60 62 73 79 93 124 146 155 158 181 186 219 237 292 310 316 331 362 365 372 395 438 465 474 543 620 662 724 730 790 876 905 930 948 993 1086 1095 1185 1324 1460 1580 1655 1810 1860 1986 2172 2190 2263 2370 2449 2715 3310 3620 3972 4380 4526 4740 4898 4965 5430 5611 5767 6620 6789 7347 9052 9796 9930 10261 10860 11222 11315 11534 12245 13213 13578 14299 14694 16833 17301 19860 20522 22444 22630 23068 24163 24490 26149 26426 27156 28055 28598 28835 29388 30783 33666 33945 34602 36735 39639 41044 42897 45260 48326 48980 51305 52298 52852 56110 57196 57670 59911 61566 66065 67332 67890 69204 71495 72489 73470 78447 79278 84165 85794 86505 96652 102610 104596 112220 115340 119822 120815 123132 130745 132130 135780 142990 144978 146940 153915 156894 158556 168330 171588 173010 178777 179733 198195 205220 214485 239644 241630 261490 264260 285980 289956 299555 307830 313788 336660 346020 357554 359466 362445 392235 396390 409603 428970 443269 483260 522980 536331 599110 615660 715108 718932 724890 749053 784470 792780 810619 819206 857940 886538 893885 898665 1043827 1072662 1198220 1228809 1329807 1449780 1498106 1568940 1621238 1638412 1773076 1787770 1797330 1857241 1908877 2048015 2087654 2145324 2216345 2247159 2431857 2457618 2659614 2681655 2996212 3131481 3242476 3575540 3594660 3714482 3745265 3817754 4053095 4096030 4175308 4373503 4432690 4494318 4732969 4863714 4915236 5219135 5319228 5363310 5571723 5726631 6144045 6262962 6649035 7428964 7490530 7635508 8106190 8192060 8747006 8865380 8988636 9286205 9465938 9544385 9727428 10438270 10726620 11143446 11235795 11453262 12159285 12288090 12525924 13120509 13298070 14198907 14981060 15657405 16212380 17494012 18572410 18931876 19088770 20876540 21867515 22286892 22471590 22906524 23664845 24318570 24576180 26241018 26596140 27858615 28397814 28633155 31314810 32358637 37144820 38177540 43735030 44943180 47329690 48637140 52482036 55717230 56795628 57266310 59175187 62629620 64717274 65602545 70994535 87470060 94659380 97075911 111434460 114532620 118350374 129434548 131205090 135578593 141989070 146722039 161793185 177525561 194151822 236700748 262410180 271157186 283978140 293444078 295875935 323586370 345506737 355051122 388303644 406735779 440166117 485379555 542314372 586888156 591751870 647172740 677892965 691013474 710102244 733610195 813471558 880332234 887627805 970759110 1036520211 1183503740 1355785930 1382026948 1467220390 1626943116 1727533685 1760664468 1775255610 1941518220 2033678895 2073040422 2200830585 2711571860 2934440780 3455067370 3550511220 4067357790 4146080844 4401661170 5182601055 6910134740 8134715580 8803322340 10365202110 10710708847 20730404220 21421417694 32132126541 42842835388 53553544235 64264253082 107107088470 128528506164 160660632705 214214176940 321321265410 642642530820
• Sum of all divisors σ(n): 1923049390080
• Sum of proper divisors (its aliquot sum) s(n): 1280406859260
• 642642530820 is an abundant number, because the sum of its proper divisors (1280406859260) is greater than itself. Its abundance is 637764328440

Bases of 642642530820

• Binary: 1001010110100000011110101101001000000100₂
• Hexadecimal: 0x95A07AD204
• Base-36: 8784RQBO

Squares and roots of 642642530820

• 642642530820 squared (642642530820²) is 412989422418734649872400
• 642642530820 cubed (642642530820³) is 265404567625065681176025726067368000
• The square root of 642642530820 is 801649.8804465701
• The cube root of 642642530820 is 8629.5832234465

Scales and comparisons

• 642,642,530,820 seconds is equal to 20,434 years, 2 weeks, 2 days, 6 hours, 7 minutes.
• To count from 1 to 642,642,530,820 would take you about forty thousand, eight hundred sixty-eight 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 642642530820 cubic inches would be around 719.1 feet tall.

Recreational maths with 642642530820

• 642642530820 backwards is 028035246246
• The number of decimal digits it has is: 12
• The sum of 642642530820's digits is 42
• More coming soon!