28742493990

Names of 28742493990

• Cardinal: 28742493990 can be written as Twenty-eight billion, seven hundred forty-two million, four hundred ninety-three thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.874249399 × 10¹⁰

Factors of 28742493990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 19552734

Divisors of 28742493990

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 49 70 98 105 147 210 245 294 490 735 1470 19552717 39105434 58658151 97763585 117316302 136869019 195527170 273738038 293290755 410607057 586581510 684345095 821214114 958083133 1368690190 1916166266 2053035285 2874249399 4106070570 4790415665 5748498798 9580831330 14371246995 28742493990
• Sum of all divisors σ(n): 80244354672
• Sum of proper divisors (its aliquot sum) s(n): 51501860682
• 28742493990 is an abundant number, because the sum of its proper divisors (51501860682) is greater than itself. Its abundance is 22759366692

Bases of 28742493990

• Binary: 11010110001001011111010011100100110₂
• Hexadecimal: 0x6B12FA726
• Base-36: D7CJEAU

Squares and roots of 28742493990

• 28742493990 squared (28742493990²) is 826130960765186120100
• 28742493990 cubed (28742493990³) is 23745064174746287858205668199000
• The square root of 28742493990 is 169536.1141173171
• The cube root of 28742493990 is 3063.1962128709

Scales and comparisons

• 28,742,493,990 seconds is equal to 913 years, 47 weeks, 6 days, 18 hours, 6 minutes, 30 seconds.
• To count from 1 to 28,742,493,990 would take you about one thousand, eight hundred twenty-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 28742493990 cubic inches would be around 255.3 feet tall.

Recreational maths with 28742493990

• 28742493990 backwards is 09939424782
• The number of decimal digits it has is: 11
• The sum of 28742493990's digits is 57
• More coming soon!