28309072009

Names of 28309072009

• Cardinal: 28309072009 can be written as Twenty-eight billion, three hundred nine million, seventy-two thousand and nine.

Scientific notation

• Scientific notation: 2.8309072009 × 10¹⁰

Factors of 28309072009

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 168253

Divisors of 28309072009

• Number of divisors d(n): 3
• Complete list of divisors:
  1 168253 28309072009
• Sum of all divisors σ(n): 28309240263
• Sum of proper divisors (its aliquot sum) s(n): 168254
• 28309072009 is a deficient number, because the sum of its proper divisors (168254) is less than itself. Its deficiency is 28308903755

Bases of 28309072009

• Binary: 11010010111010110100010100010001001₂
• Hexadecimal: 0x6975A2889
• Base-36: D06HNRD

Squares and roots of 28309072009

• 28309072009 squared (28309072009²) is 801403558010747296081
• 28309072009 cubed (28309072009³) is 22686991031995054000659072496729
• 28309072009 is a perfect square number. Its square root is 168253
• The cube root of 28309072009 is 3047.7210247505

Scales and comparisons

• 28,309,072,009 seconds is equal to 900 years, 7 weeks, 2 days, 7 hours, 6 minutes, 49 seconds.
• To count from 1 to 28,309,072,009 would take you about one thousand, eight hundred 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 28309072009 cubic inches would be around 254 feet tall.

Recreational maths with 28309072009

• 28309072009 backwards is 90027090382
• The number of decimal digits it has is: 11
• The sum of 28309072009's digits is 40
• More coming soon!