1221128259

Names of 1221128259

• Cardinal: 1221128259 can be written as One billion, two hundred twenty-one million, one hundred twenty-eight thousand, two hundred fifty-nine.

Scientific notation

• Scientific notation: 1.221128259 × 10⁹

Factors of 1221128259

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 225

Divisors of 1221128259

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 13 23 29 39 69 87 157 169 299 377 471 507 529 667 897 1131 1587 2001 2041 3611 3887 4553 4901 6123 6877 8671 10833 11661 13659 14703 15341 20631 26013 26533 46023 46943 59189 79599 83053 89401 104719 112723 140829 177567 199433 249159 268203 314157 338169 598299 610259 769457 1079689 1361347 1830777 2308371 2408537 2592629 3239067 4084041 7225611 7777887 14035957 17697511 31310981 42107871 53092533 93932943 407042753 1221128259
• Sum of all divisors σ(n): 1918733040
• Sum of proper divisors (its aliquot sum) s(n): 697604781
• 1221128259 is a deficient number, because the sum of its proper divisors (697604781) is less than itself. Its deficiency is 523523478

Bases of 1221128259

• Binary: 1001000110010001111000001000011₂
• Hexadecimal: 0x48C8F043
• Base-36: K710LF

Squares and roots of 1221128259

• 1221128259 squared (1221128259²) is 1491154224928371081
• 1221128259 cubed (1221128259³) is 1820890562587276177847477979
• The square root of 1221128259 is 34944.6456413565
• The cube root of 1221128259 is 1068.8590216335

Scales and comparisons

• 1,221,128,259 seconds is equal to 38 years, 43 weeks, 10 hours, 17 minutes, 39 seconds.
• To count from 1 to 1,221,128,259 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 1221128259 cubic inches would be around 89.1 feet tall.

Recreational maths with 1221128259

• 1221128259 backwards is 9528211221
• The number of decimal digits it has is: 10
• The sum of 1221128259's digits is 33
• More coming soon!