13991280

Names of 13991280

• Cardinal: 13991280 can be written as Thirteen million, nine hundred ninety-one thousand, two hundred eighty.

Scientific notation

• Scientific notation: 1.399128 × 10⁷

Factors of 13991280

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 708

Divisors of 13991280

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 97 120 194 240 291 388 485 582 601 776 970 1164 1202 1455 1552 1803 1940 2328 2404 2910 3005 3606 3880 4656 4808 5820 6010 7212 7760 9015 9616 11640 12020 14424 18030 23280 24040 28848 36060 48080 58297 72120 116594 144240 174891 233188 291485 349782 466376 582970 699564 874455 932752 1165940 1399128 1748910 2331880 2798256 3497820 4663760 6995640 13991280
• Sum of all divisors σ(n): 43893024
• Sum of proper divisors (its aliquot sum) s(n): 29901744
• 13991280 is an abundant number, because the sum of its proper divisors (29901744) is greater than itself. Its abundance is 15910464

Bases of 13991280

• Binary: 110101010111110101110000₂
• Hexadecimal: 0xD57D70
• Base-36: 8BVQO

Squares and roots of 13991280

• 13991280 squared (13991280²) is 195755916038400
• 13991280 cubed (13991280³) is 2738875832949745152000
• The square root of 13991280 is 3740.4919462551
• The cube root of 13991280 is 240.9641768807

Scales and comparisons

• 13,991,280 seconds is equal to 23 weeks, 22 hours, 28 minutes.
• To count from 1 to 13,991,280 would take you about thirty-four weeks!

  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 13991280 cubic inches would be around 20.1 feet tall.

Recreational maths with 13991280

• 13991280 backwards is 08219931
• The number of decimal digits it has is: 8
• The sum of 13991280's digits is 33
• More coming soon!