2640748731

Names of 2640748731

• Cardinal: 2640748731 can be written as Two billion, six hundred forty million, seven hundred forty-eight thousand, seven hundred thirty-one.

Scientific notation

• Scientific notation: 2.640748731 × 10⁹

Factors of 2640748731

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 880249580

Divisors of 2640748731

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 880249577 2640748731
• Sum of all divisors σ(n): 3520998312
• Sum of proper divisors (its aliquot sum) s(n): 880249581
• 2640748731 is a deficient number, because the sum of its proper divisors (880249581) is less than itself. Its deficiency is 1760499150

Bases of 2640748731

• Binary: 10011101011001101010000010111011₂
• Hexadecimal: 0x9D66A0BB
• Base-36: 17O8ERF

Squares and roots of 2640748731

• 2640748731 squared (2640748731²) is 6973553860278110361
• 2640748731 cubed (2640748731³) is 18415403507089571242888701891
• The square root of 2640748731 is 51388.2158767941
• The cube root of 2640748731 is 1382.2152914325

Scales and comparisons

• 2,640,748,731 seconds is equal to 83 years, 50 weeks, 2 days, 5 hours, 18 minutes, 51 seconds.
• To count from 1 to 2,640,748,731 would take you about one 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 2640748731 cubic inches would be around 115.2 feet tall.

Recreational maths with 2640748731

• 2640748731 backwards is 1378470462
• The number of decimal digits it has is: 10
• The sum of 2640748731's digits is 42
• More coming soon!