990681274890

Names of 990681274890

• Cardinal: 990681274890 can be written as Nine hundred ninety billion, six hundred eighty-one million, two hundred seventy-four thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 9.9068127489 × 10¹¹

Factors of 990681274890

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2039118

Divisors of 990681274890

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 1801 3602 5403 9005 10806 16209 18010 27015 32418 48627 54030 81045 97254 162090 243135 486270 2037307 4074614 6111921 10186535 12223842 18335763 20373070 30559605 36671526 55007289 61119210 91678815 110014578 183357630 275036445 550072890 3669189907 7338379814 11007569721 18345949535 22015139442 33022709163 36691899070 55037848605 66045418326 99068127489 110075697210 165113545815 198136254978 330227091630 495340637445 990681274890
• Sum of all divisors σ(n): 2643284891520
• Sum of proper divisors (its aliquot sum) s(n): 1652603616630
• 990681274890 is an abundant number, because the sum of its proper divisors (1652603616630) is greater than itself. Its abundance is 661922341740

Bases of 990681274890

• Binary: 1110011010101001001101001001101000001010₂
• Hexadecimal: 0xE6A9349A0A
• Base-36: CN421VYI

Squares and roots of 990681274890

• 990681274890 squared (990681274890²) is 981449388417675744512100
• 990681274890 cubed (990681274890³) is 972303531357633806383877149031169000
• The square root of 990681274890 is 995329.7317422001
• The cube root of 990681274890 is 9968.8405929449

Scales and comparisons

• 990,681,274,890 seconds is equal to 31,500 years, 31 weeks, 1 day, 11 hours, 1 minute, 30 seconds.
• To count from 1 to 990,681,274,890 would take you about sixty-three thousand and one 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 990681274890 cubic inches would be around 830.7 feet tall.

Recreational maths with 990681274890

• 990681274890 backwards is 098472186099
• The number of decimal digits it has is: 12
• The sum of 990681274890's digits is 63
• More coming soon!