13891021810

Names of 13891021810

• Cardinal: 13891021810 can be written as Thirteen billion, eight hundred ninety-one million, twenty-one thousand, eight hundred ten.

Scientific notation

• Scientific notation: 1.389102181 × 10¹⁰

Factors of 13891021810

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1348

Divisors of 13891021810

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 10 17 23 34 41 46 73 82 85 115 146 170 205 230 365 391 410 697 730 782 943 1187 1241 1394 1679 1886 1955 2374 2482 2993 3358 3485 3910 4715 5935 5986 6205 6970 8395 9430 11870 12410 14965 16031 16790 20179 27301 28543 29930 32062 40358 48667 50881 54602 57086 68839 80155 86651 97334 100895 101762 136505 137678 142715 160310 173302 201790 243335 254405 273010 285430 344195 433255 464117 486670 508810 688390 827339 866510 928234 1119341 1170263 1473067 1654678 1992973 2238682 2320585 2340526 2946134 3552691 3985946 4136695 4641170 5596705 5851315 7105382 7365335 8273390 9964865 11193410 11702630 14730670 17763455 19028797 19929730 33880541 35526910 38057594 60395747 67761082 81711893 95143985 120791494 163423786 169402705 190287970 301978735 338805410 408559465 603957470 817118930 1389102181 2778204362 6945510905 13891021810
• Sum of all divisors σ(n): 28711355904
• Sum of proper divisors (its aliquot sum) s(n): 14820334094
• 13891021810 is an abundant number, because the sum of its proper divisors (14820334094) is greater than itself. Its abundance is 929312284

Bases of 13891021810

• Binary: 1100111011111110000010101111110010₂
• Hexadecimal: 0x33BF82BF2
• Base-36: 6DQCT0Y

Squares and roots of 13891021810

• 13891021810 squared (13891021810²) is 192960486925895676100
• 13891021810 cubed (13891021810³) is 2680418332355836690489795741000
• The square root of 13891021810 is 117860.1790682501
• The cube root of 13891021810 is 2403.8723257295

Scales and comparisons

• 13,891,021,810 seconds is equal to 441 years, 35 weeks, 6 days, 17 hours, 10 minutes, 10 seconds.
• To count from 1 to 13,891,021,810 would take you about eight hundred eighty-three 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 13891021810 cubic inches would be around 200.3 feet tall.

Recreational maths with 13891021810

• 13891021810 backwards is 01812019831
• 13891021810 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 13891021810's digits is 34
• More coming soon!