640507345772

Names of 640507345772

• Cardinal: 640507345772 can be written as Six hundred forty billion, five hundred seven million, three hundred forty-five thousand, seven hundred seventy-two.

Scientific notation

• Scientific notation: 6.40507345772 × 10¹¹

Factors of 640507345772

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 187756

Divisors of 640507345772

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 7 14 28 59 118 236 413 826 1652 2089 4178 8356 14623 29246 58492 123251 185599 246502 371198 493004 742396 862757 1299193 1725514 2598386 3451028 5196772 10950341 21900682 43801364 76652387 153304774 306609548 387716311 775432622 1550865244 2714014177 5428028354 10856056708 22875262349 45750524698 91501049396 160126836443 320253672886 640507345772
• Sum of all divisors σ(n): 1303357440000
• Sum of proper divisors (its aliquot sum) s(n): 662850094228
• 640507345772 is an abundant number, because the sum of its proper divisors (662850094228) is greater than itself. Its abundance is 22342748456

Bases of 640507345772

• Binary: 1001010100100001001101100111101101101100₂
• Hexadecimal: 0x9521367B6C
• Base-36: 868TJAZW

Squares and roots of 640507345772

• 640507345772 squared (640507345772²) is 410249659987892366275984
• 640507345772 cubed (640507345772³) is 262767920822710409179850955867539648
• The square root of 640507345772 is 800317.0282906643
• The cube root of 640507345772 is 8620.0153322725

Scales and comparisons

• 640,507,345,772 seconds is equal to 20,366 years, 7 weeks, 6 days, 11 hours, 9 minutes, 32 seconds.
• To count from 1 to 640,507,345,772 would take you about forty thousand, seven hundred thirty-two 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 640507345772 cubic inches would be around 718.3 feet tall.

Recreational maths with 640507345772

• 640507345772 backwards is 277543705046
• The number of decimal digits it has is: 12
• The sum of 640507345772's digits is 50
• More coming soon!