128385753727

Names of 128385753727

• Cardinal: 128385753727 can be written as One hundred twenty-eight billion, three hundred eighty-five million, seven hundred fifty-three thousand, seven hundred twenty-seven.

Scientific notation

• Scientific notation: 1.28385753727 × 10¹¹

Factors of 128385753727

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 78

Divisors of 128385753727

• Number of divisors d(n): 128
• Complete list of divisors:
  1 7 11 19 41 49 77 121 133 209 287 343 361 451 539 779 847 931 1331 1463 2009 2299 2527 3157 3773 3971 4961 5453 5929 6517 6859 8569 9317 10241 14063 14801 16093 17689 22099 25289 27797 34727 38171 41503 43681 48013 54571 59983 65219 71687 75449 94259 103607 112651 123823 154693 162811 177023 194579 243089 267197 281219 305767 336091 381997 419881 456533 480491 528143 659813 725249 788557 829939 1036849 1139677 1239161 1362053 1701623 1790921 1968533 2140369 2352637 2673979 2939167 3093409 3363437 3697001 4618691 5076743 5809573 7257943 7977739 8674127 9129329 12536447 13779731 14982583 18717853 19700131 21653863 23544059 25879007 32330837 34027499 40667011 50805601 55844173 63905303 87755129 96458117 137900917 151577041 164808413 238192493 284669077 355639207 374302489 447337121 614285903 965306419 1061039287 1667347451 2620117423 3131359847 6757144933 11671432157 18340821961 128385753727
• Sum of all divisors σ(n): 178069248000
• Sum of proper divisors (its aliquot sum) s(n): 49683494273
• 128385753727 is a deficient number, because the sum of its proper divisors (49683494273) is less than itself. Its deficiency is 78702259454

Bases of 128385753727

• Binary: 1110111100100011000110010001001111111₂
• Hexadecimal: 0x1DE463227F
• Base-36: 1MZ9K9KV

Squares and roots of 128385753727

• 128385753727 squared (128385753727²) is 16482901760049894390529
• 128385753727 cubed (128385753727³) is 2116169766072100588454814955251583
• The square root of 128385753727 is 358309.5780564623
• The cube root of 128385753727 is 5044.7418226799

Scales and comparisons

• 128,385,753,727 seconds is equal to 4,082 years, 14 weeks, 5 hours, 22 minutes, 7 seconds.
• To count from 1 to 128,385,753,727 would take you about eight thousand, one hundred sixty-four 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 128385753727 cubic inches would be around 420.4 feet tall.

Recreational maths with 128385753727

• 128385753727 backwards is 727357583821
• The number of decimal digits it has is: 12
• The sum of 128385753727's digits is 58
• More coming soon!