78643213428

Names of 78643213428

• Cardinal: 78643213428 can be written as Seventy-eight billion, six hundred forty-three million, two hundred thirteen thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 7.8643213428 × 10¹⁰

Factors of 78643213428

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 48934

Divisors of 78643213428

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 12 13 26 39 52 78 156 14759 29518 34157 44277 59036 68314 88554 102471 136628 177108 191867 204942 383734 409884 444041 575601 767468 888082 1151202 1332123 1776164 2302404 2664246 5328492 504123163 1008246326 1512369489 2016492652 3024738978 6049477956 6553601119 13107202238 19660803357 26214404476 39321606714 78643213428
• Sum of all divisors σ(n): 197635455360
• Sum of proper divisors (its aliquot sum) s(n): 118992241932
• 78643213428 is an abundant number, because the sum of its proper divisors (118992241932) is greater than itself. Its abundance is 40349028504

Bases of 78643213428

• Binary: 1001001001111100000000011010001110100₂
• Hexadecimal: 0x124F803474
• Base-36: 104M4ZUC

Squares and roots of 78643213428

• 78643213428 squared (78643213428²) is 6184755018281959511184
• 78643213428 cubed (78643213428³) is 486389008902642183720097864978752
• The square root of 78643213428 is 280433.9733841105
• The cube root of 78643213428 is 4284.3711243721

Scales and comparisons

• 78,643,213,428 seconds is equal to 2,500 years, 31 weeks, 5 days, 9 hours, 3 minutes, 48 seconds.
• To count from 1 to 78,643,213,428 would take you about five thousand and one 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 78643213428 cubic inches would be around 357 feet tall.

Recreational maths with 78643213428

• 78643213428 backwards is 82431234687
• The number of decimal digits it has is: 11
• The sum of 78643213428's digits is 48
• More coming soon!