642639714840

Names of 642639714840

• Cardinal: 642639714840 can be written as Six hundred forty-two billion, six hundred thirty-nine million, seven hundred fourteen thousand, eight hundred forty.

Scientific notation

• Scientific notation: 6.4263971484 × 10¹¹

Factors of 642639714840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 3369

Divisors of 642639714840

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 243 270 324 360 405 486 540 648 729 810 972 1080 1215 1458 1620 1944 2187 2430 2916 3240 3359 3645 4374 4860 5832 6561 6718 7290 8748 9720 10077 10935 13122 13436 14580 16795 17496 19683 20154 21870 26244 26872 29160 30231 32805 33590 39366 40308 43740 50385 52488 59049 60462 65610 67180 78732 80616 87480 90693 98415 100770 118098 120924 131220 134360 151155 157464 177147 181386 196830 201540 236196 241848 262440 272079 295245 302310 354294 362772 393660 403080 453465 472392 531441 544158 590490 604620 708588 725544 787320 816237 885735 906930 1062882 1088316 1180980 1209240 1360395 1417176 1594323 1632474 1771470 1813860 2125764 2176632 2361960 2448711 2657205 2720790 3188646 3264948 3542940 3627720 4081185 4251528 4782969 4897422 5314410 5441580 6377292 6529896 7085880 7346133 7971615 8162370 9565938 9794844 10628820 10883160 12243555 12754584 14692266 15943230 16324740 19131876 19589688 21257640 22038399 23914845 24487110 29384532 31886460 32649480 36730665 38263752 44076798 47829690 48974220 58769064 63772920 66115197 73461330 88153596 95659380 97948440 110191995 132230394 146922660 176307192 191318760 198345591 220383990 264460788 293845320 330575985 396691182 440767980 528921576 595036773 661151970 793382364 881535960 991727955 1190073546 1322303940 1586764728 1785110319 1983455910 2380147092 2644607880 2975183865 3570220638 3966911820 4760294184 5355330957 5950367730 7140441276 7933823640 8925551595 10710661914 11900735460 14280882552 16065992871 17851103190 21421323828 23801470920 26776654785 32131985742 35702206380 42842647656 53553309570 64263971484 71404412760 80329964355 107106619140 128527942968 160659928710 214213238280 321319857420 642639714840
• Sum of all divisors σ(n): 2169554587200
• Sum of proper divisors (its aliquot sum) s(n): 1526914872360
• 642639714840 is an abundant number, because the sum of its proper divisors (1526914872360) is greater than itself. Its abundance is 884275157520

Bases of 642639714840

• Binary: 1001010110100000010011111101101000011000₂
• Hexadecimal: 0x95A04FDA18
• Base-36: 87833DI0

Squares and roots of 642639714840

• 642639714840 squared (642639714840²) is 412985803089636516225600
• 642639714840 cubed (642639714840³) is 265401078730492401746470617107904000
• The square root of 642639714840 is 801648.1240793869
• The cube root of 642639714840 is 8629.5706188397

Scales and comparisons

• 642,639,714,840 seconds is equal to 20,433 years, 49 weeks, 4 days, 15 hours, 54 minutes.
• To count from 1 to 642,639,714,840 would take you about forty thousand, eight hundred sixty-seven 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 642639714840 cubic inches would be around 719.1 feet tall.

Recreational maths with 642639714840

• 642639714840 backwards is 048417936246
• 642639714840 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 642639714840's digits is 54
• More coming soon!