640739442688

Names of 640739442688

• Cardinal: 640739442688 can be written as Six hundred forty billion, seven hundred thirty-nine million, four hundred forty-two thousand, six hundred eighty-eight.

Scientific notation

• Scientific notation: 6.40739442688 × 10¹¹

Factors of 640739442688

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 260

Divisors of 640739442688

• Number of divisors d(n): 114
• Complete list of divisors:
  1 2 4 8 16 32 64 67 128 134 191 256 268 382 512 536 764 1024 1072 1528 2048 2144 3056 4096 4288 6112 8192 8576 12224 12797 16384 17152 24448 25594 32768 34304 36481 48896 51188 65536 68608 72962 97792 102376 131072 137216 145924 195584 204752 262144 274432 291848 391168 409504 548864 583696 782336 819008 1097728 1167392 1564672 1638016 2195456 2334784 2444227 3129344 3276032 4390912 4669568 4888454 6258688 6552064 8781824 9339136 9776908 12517376 13104128 17563648 18678272 19553816 25034752 26208256 37356544 39107632 50069504 52416512 74713088 78215264 104833024 149426176 156430528 209666048 298852352 312861056 419332096 597704704 625722112 838664192 1195409408 1251444224 1677328384 2390818816 2502888448 3354656768 4781637632 5005776896 9563275264 10011553792 20023107584 40046215168 80092430336 160184860672 320369721344 640739442688
• Sum of all divisors σ(n): 1307448046268
• Sum of proper divisors (its aliquot sum) s(n): 666708603580
• 640739442688 is an abundant number, because the sum of its proper divisors (666708603580) is greater than itself. Its abundance is 25969160892

Bases of 640739442688

• Binary: 1001010100101111000011000000000000000000₂
• Hexadecimal: 0x952F0C0000
• Base-36: 86CNPY4G

Squares and roots of 640739442688

• 640739442688 squared (640739442688²) is 410547033416128836665344
• 640739442688 cubed (640739442688³) is 263053677388262103595358294923804672
• The square root of 640739442688 is 800462.0182669507
• The cube root of 640739442688 is 8621.0564014489

Scales and comparisons

• 640,739,442,688 seconds is equal to 20,373 years, 27 weeks, 4 days, 18 hours, 31 minutes, 28 seconds.
• To count from 1 to 640,739,442,688 would take you about forty thousand, seven hundred forty-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 640739442688 cubic inches would be around 718.4 feet tall.

Recreational maths with 640739442688

• 640739442688 backwards is 886244937046
• The number of decimal digits it has is: 12
• The sum of 640739442688's digits is 61
• More coming soon!