1221002305

Names of 1221002305

• Cardinal: 1221002305 can be written as One billion, two hundred twenty-one million, two thousand, three hundred five.

Scientific notation

• Scientific notation: 1.221002305 × 10⁹

Factors of 1221002305

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 214488

Divisors of 1221002305

• Number of divisors d(n): 16
• Complete list of divisors:
  1 5 17 67 85 335 1139 5695 214399 1071995 3644783 14364733 18223915 71823665 244200461 1221002305
• Sum of all divisors σ(n): 1574553600
• Sum of proper divisors (its aliquot sum) s(n): 353551295
• 1221002305 is a deficient number, because the sum of its proper divisors (353551295) is less than itself. Its deficiency is 867451010

Bases of 1221002305

• Binary: 1001000110001110000010001000001₂
• Hexadecimal: 0x48C70441
• Base-36: K6YBEP

Squares and roots of 1221002305

• 1221002305 squared (1221002305²) is 1490846628815313025
• 1221002305 cubed (1221002305³) is 1820327170184976622821522625
• The square root of 1221002305 is 34942.8434017611
• The cube root of 1221002305 is 1068.8222710039

Scales and comparisons

• 1,221,002,305 seconds is equal to 38 years, 42 weeks, 5 days, 23 hours, 18 minutes, 25 seconds.
• To count from 1 to 1,221,002,305 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 1221002305 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221002305

• 1221002305 backwards is 5032001221
• The number of decimal digits it has is: 10
• The sum of 1221002305's digits is 16
• More coming soon!