221388935928

Names of 221388935928

• Cardinal: 221388935928 can be written as Two hundred twenty-one billion, three hundred eighty-eight million, nine hundred thirty-five thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 2.21388935928 × 10¹¹

Factors of 221388935928

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 824080

Divisors of 221388935928

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 659 1318 1977 2636 3954 5272 7908 11203 15816 22406 33609 44812 67218 89624 134436 268872 823399 1646798 2470197 3293596 4940394 6587192 9880788 13997783 19761576 27995566 41993349 55991132 83986698 111982264 167973396 335946792 542619941 1085239882 1627859823 2170479764 3255719646 4340959528 6511439292 9224538997 13022878584 18449077994 27673616991 36898155988 55347233982 73796311976 110694467964 221388935928
• Sum of all divisors σ(n): 586919520000
• Sum of proper divisors (its aliquot sum) s(n): 365530584072
• 221388935928 is an abundant number, because the sum of its proper divisors (365530584072) is greater than itself. Its abundance is 144141648144

Bases of 221388935928

• Binary: 11001110001011110011110001001011111000₂
• Hexadecimal: 0x338BCF12F8
• Base-36: 2TPD988O

Squares and roots of 221388935928

• 221388935928 squared (221388935928²) is 49013060951332089221184
• 221388935928 cubed (221388935928³) is 10850949410589618626839083996298752
• The square root of 221388935928 is 470519.8571027583
• The cube root of 221388935928 is 6049.4882514845

Scales and comparisons

• 221,388,935,928 seconds is equal to 7,039 years, 25 weeks, 22 hours, 38 minutes, 48 seconds.
• To count from 1 to 221,388,935,928 would take you about fourteen thousand and seventy-eight 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 221388935928 cubic inches would be around 504.1 feet tall.

Recreational maths with 221388935928

• 221388935928 backwards is 829539883122
• The number of decimal digits it has is: 12
• The sum of 221388935928's digits is 60
• More coming soon!