2745420990

Names of 2745420990

• Cardinal: 2745420990 can be written as Two billion, seven hundred forty-five million, four hundred twenty thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.74542099 × 10⁹

Factors of 2745420990

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1194

Divisors of 2745420990

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 10 13 15 23 26 30 39 46 65 69 78 115 130 138 195 230 299 345 390 421 598 690 727 842 897 1263 1454 1495 1794 2105 2181 2526 2990 3635 4210 4362 4485 5473 6315 7270 8970 9451 9683 10905 10946 12630 16419 16721 18902 19366 21810 27365 28353 29049 32838 33442 47255 48415 50163 54730 56706 58098 82095 83605 94510 96830 100326 125879 141765 145245 164190 167210 217373 250815 251758 283530 290490 306067 377637 434746 501630 612134 629395 652119 755274 918201 1086865 1258790 1304238 1530335 1836402 1888185 2173730 3060670 3260595 3776370 3978871 4591005 6521190 7039541 7957742 9182010 11936613 14079082 19894355 21118623 23873226 35197705 39788710 42237246 59683065 70395410 91514033 105593115 119366130 183028066 211186230 274542099 457570165 549084198 915140330 1372710495 2745420990
• Sum of all divisors σ(n): 7432169472
• Sum of proper divisors (its aliquot sum) s(n): 4686748482
• 2745420990 is an abundant number, because the sum of its proper divisors (4686748482) is greater than itself. Its abundance is 1941327492

Bases of 2745420990

• Binary: 10100011101000111100110010111110₂
• Hexadecimal: 0xA3A3CCBE
• Base-36: 19EJWE6

Squares and roots of 2745420990

• 2745420990 squared (2745420990²) is 7537336412332580100
• 2745420990 cubed (2745420990³) is 20693161595109160267396299000
• The square root of 2745420990 is 52396.7650719011
• The cube root of 2745420990 is 1400.2416232623

Scales and comparisons

• 2,745,420,990 seconds is equal to 87 years, 15 weeks, 2 days, 16 hours, 56 minutes, 30 seconds.
• To count from 1 to 2,745,420,990 would take you about one hundred seventy-four 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 2745420990 cubic inches would be around 116.7 feet tall.

Recreational maths with 2745420990

• 2745420990 backwards is 0990245472
• The number of decimal digits it has is: 10
• The sum of 2745420990's digits is 42
• More coming soon!