128675348720

Names of 128675348720

• Cardinal: 128675348720 can be written as One hundred twenty-eight billion, six hundred seventy-five million, three hundred forty-eight thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2867534872 × 10¹¹

Factors of 128675348720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 193212

Divisors of 128675348720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 340 491 680 982 1360 1964 2455 3928 4910 7856 8347 9820 16694 19640 33388 39280 41735 66776 83470 133552 166940 192697 333880 385394 667760 770788 963485 1541576 1926970 3083152 3275849 3853940 6551698 7707880 13103396 15415760 16379245 26206792 32758490 52413584 65516980 94614227 131033960 189228454 262067920 378456908 473071135 756913816 946142270 1513827632 1608441859 1892284540 3216883718 3784569080 6433767436 7569138160 8042209295 12867534872 16084418590 25735069744 32168837180 64337674360 128675348720
• Sum of all divisors σ(n): 317415228768
• Sum of proper divisors (its aliquot sum) s(n): 188739880048
• 128675348720 is an abundant number, because the sum of its proper divisors (188739880048) is greater than itself. Its abundance is 60064531328

Bases of 128675348720

• Binary: 1110111110101101001100000000011110000₂
• Hexadecimal: 0x1DF5A600F0
• Base-36: 1N41ZAI8

Squares and roots of 128675348720

• 128675348720 squared (128675348720²) is 16557345368213605638400
• 128675348720 cubed (128675348720³) is 2130522189132362508969678222848000
• The square root of 128675348720 is 358713.4632544475
• The cube root of 128675348720 is 5048.5320534189

Scales and comparisons

• 128,675,348,720 seconds is equal to 4,091 years, 24 weeks, 6 days, 25 minutes, 20 seconds.
• To count from 1 to 128,675,348,720 would take you about eight thousand, one hundred eighty-two 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 128675348720 cubic inches would be around 420.7 feet tall.

Recreational maths with 128675348720

• 128675348720 backwards is 027843576821
• The number of decimal digits it has is: 12
• The sum of 128675348720's digits is 53
• More coming soon!