642946407440

Names of 642946407440

• Cardinal: 642946407440 can be written as Six hundred forty-two billion, nine hundred forty-six million, four hundred seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 6.4294640744 × 10¹¹

Factors of 642946407440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2119

Divisors of 642946407440

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 61 80 122 149 244 298 305 488 596 610 745 809 976 1093 1192 1220 1490 1618 2186 2384 2440 2980 3236 4045 4372 4880 5465 5960 6472 8090 8744 9089 10930 11920 12944 16180 17488 18178 21860 32360 36356 43720 45445 49349 64720 66673 72712 87440 90890 98698 120541 133346 145424 162857 181780 197396 241082 246745 266692 325714 333365 363560 394792 482164 493490 533384 602705 651428 666730 727120 789584 814285 884237 964328 986980 1066768 1205410 1302856 1333460 1628570 1768474 1928656 1973960 2410820 2605712 2666920 3257140 3536948 3947920 4421185 4821640 5333840 6514280 7073896 7353001 8842370 9643280 9934277 13028560 14147792 14706002 17684740 19868554 29412004 35369480 36765005 39737108 49671385 53938457 58824008 70738960 73530010 79474216 99342770 107876914 117648016 131751313 147060020 158948432 198685540 215753828 263502626 269692285 294120040 397371080 431507656 527005252 539384570 588240080 658756565 794742160 863015312 1054010504 1078769140 1317513130 2108021008 2157538280 2635026260 4315076560 5270052520 8036830093 10540105040 16073660186 32147320372 40184150465 64294640744 80368300930 128589281488 160736601860 321473203720 642946407440
• Sum of all divisors σ(n): 1532844972000
• Sum of proper divisors (its aliquot sum) s(n): 889898564560
• 642946407440 is an abundant number, because the sum of its proper divisors (889898564560) is greater than itself. Its abundance is 246952157120

Bases of 642946407440

• Binary: 1001010110110010100101111001110000010000₂
• Hexadecimal: 0x95B2979C10
• Base-36: 87D5OV0W

Squares and roots of 642946407440

• 642946407440 squared (642946407440²) is 413380082840002487353600
• 642946407440 cubed (642946407440³) is 265781239169229191564661152950784000
• The square root of 642946407440 is 801839.3900526467
• The cube root of 642946407440 is 8630.9431891287

Scales and comparisons

• 642,946,407,440 seconds is equal to 20,443 years, 36 weeks, 5 days, 8 hours, 17 minutes, 20 seconds.
• To count from 1 to 642,946,407,440 would take you about forty thousand, eight hundred eighty-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 642946407440 cubic inches would be around 719.2 feet tall.

Recreational maths with 642946407440

• 642946407440 backwards is 044704649246
• The number of decimal digits it has is: 12
• The sum of 642946407440's digits is 50
• More coming soon!