27993018645

Names of 27993018645

• Cardinal: 27993018645 can be written as Twenty-seven billion, nine hundred ninety-three million, eighteen thousand, six hundred forty-five.

Scientific notation

• Scientific notation: 2.7993018645 × 10¹⁰

Factors of 27993018645

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 691

Divisors of 27993018645

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 5 9 15 29 45 61 87 145 183 261 305 435 549 593 915 1305 1769 1779 2745 2965 5307 5337 8845 8895 15921 17197 26535 26685 36173 51591 79605 85985 108519 154773 180865 257955 325557 351649 542595 773865 1049017 1054947 1627785 1758245 3147051 3164841 5245085 5274735 9441153 10197821 15735255 15824205 21450589 30593463 47205765 50989105 64351767 91780389 107252945 152967315 193055301 321758835 458901945 622067081 965276505 1866201243 3110335405 5598603729 9331006215 27993018645
• Sum of all divisors σ(n): 51103414440
• Sum of proper divisors (its aliquot sum) s(n): 23110395795
• 27993018645 is a deficient number, because the sum of its proper divisors (23110395795) is less than itself. Its deficiency is 4882622850

Bases of 27993018645

• Binary: 11010000100100000111001000100010101₂
• Hexadecimal: 0x684839115
• Base-36: CUYBJF9

Squares and roots of 27993018645

• 27993018645 squared (27993018645²) is 783609092859317636025
• 27993018645 cubed (27993018645³) is 21935583946802414947225148686125
• The square root of 27993018645 is 167311.1432182567
• The cube root of 27993018645 is 3036.3365758309

Scales and comparisons

• 27,993,018,645 seconds is equal to 890 years, 4 weeks, 5 days, 6 hours, 30 minutes, 45 seconds.
• To count from 1 to 27,993,018,645 would take you about one thousand, seven hundred eighty 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 27993018645 cubic inches would be around 253 feet tall.

Recreational maths with 27993018645

• 27993018645 backwards is 54681039972
• The number of decimal digits it has is: 11
• The sum of 27993018645's digits is 54
• More coming soon!