640393678336

Names of 640393678336

• Cardinal: 640393678336 can be written as Six hundred forty billion, three hundred ninety-three million, six hundred seventy-eight thousand, three hundred thirty-six.

Scientific notation

• Scientific notation: 6.40393678336 × 10¹¹

Factors of 640393678336

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1130

Divisors of 640393678336

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 16 32 64 107 128 214 256 428 512 856 1021 1712 2042 3424 4084 6848 8168 11449 13696 16336 22898 27392 32672 45796 54784 65344 91592 109247 130688 183184 218494 261376 366368 436988 522752 732736 873976 1225043 1465472 1747952 2450086 2930944 3495904 4900172 5861888 6991808 9800344 11689429 13983616 19600688 23378858 27967232 39201376 46757716 55934464 78402752 93515432 156805504 187030864 313611008 374061728 627222016 748123456 1250768903 1496246912 2501537806 2992493824 5003075612 5984987648 10006151224 20012302448 40024604896 80049209792 160098419584 320196839168 640393678336
• Sum of all divisors σ(n): 1292872719600
• Sum of proper divisors (its aliquot sum) s(n): 652479041264
• 640393678336 is an abundant number, because the sum of its proper divisors (652479041264) is greater than itself. Its abundance is 12085362928

Bases of 640393678336

• Binary: 1001010100011010011100000000111000000000₂
• Hexadecimal: 0x951A700E00
• Base-36: 866XV0N4

Squares and roots of 640393678336

• 640393678336 squared (640393678336²) is 410104063252712235728896
• 640393678336 cubed (640393678336³) is 262628049566943997366942031524397056
• The square root of 640393678336 is 800246.0111340761
• The cube root of 640393678336 is 8619.5053859963

Scales and comparisons

• 640,393,678,336 seconds is equal to 20,362 years, 27 weeks, 6 days, 20 hours, 52 minutes, 16 seconds.
• To count from 1 to 640,393,678,336 would take you about forty thousand, seven hundred twenty-five 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 640393678336 cubic inches would be around 718.3 feet tall.

Recreational maths with 640393678336

• 640393678336 backwards is 633876393046
• The number of decimal digits it has is: 12
• The sum of 640393678336's digits is 58
• More coming soon!