1220785021

Names of 1220785021

• Cardinal: 1220785021 can be written as One billion, two hundred twenty million, seven hundred eighty-five thousand and twenty-one.

Scientific notation

• Scientific notation: 1.220785021 × 10⁹

Factors of 1220785021

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 5785922

Divisors of 1220785021

• Number of divisors d(n): 4
• Complete list of divisors:
  1 211 5785711 1220785021
• Sum of all divisors σ(n): 1226570944
• Sum of proper divisors (its aliquot sum) s(n): 5785923
• 1220785021 is a deficient number, because the sum of its proper divisors (5785923) is less than itself. Its deficiency is 1214999098

Bases of 1220785021

• Binary: 1001000110000111011001101111101₂
• Hexadecimal: 0x48C3B37D
• Base-36: K6TNR1

Squares and roots of 1220785021

• 1220785021 squared (1220785021²) is 1490316067497970441
• 1220785021 cubed (1220785021³) is 1819355531757147262273564261
• The square root of 1220785021 is 34939.7341289253
• The cube root of 1220785021 is 1068.7588663309

Scales and comparisons

• 1,220,785,021 seconds is equal to 38 years, 42 weeks, 3 days, 10 hours, 57 minutes, 1 second.
• To count from 1 to 1,220,785,021 would take you about seventy-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 1220785021 cubic inches would be around 89.1 feet tall.

Recreational maths with 1220785021

• 1220785021 backwards is 1205870221
• The number of decimal digits it has is: 10
• The sum of 1220785021's digits is 28
• More coming soon!