3978728656

Names of 3978728656

• Cardinal: 3978728656 can be written as Three billion, nine hundred seventy-eight million, seven hundred twenty-eight thousand, six hundred fifty-six.

Scientific notation

• Scientific notation: 3.978728656 × 10⁹

Factors of 3978728656

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 13741

Divisors of 3978728656

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 53 56 98 106 112 196 212 343 371 392 424 686 742 784 848 1372 1484 2597 2744 2968 5194 5488 5936 10388 13679 18179 20776 27358 36358 41552 54716 72716 95753 109432 145432 191506 218864 290864 383012 670271 724987 766024 1340542 1449974 1532048 2681084 2899948 4691897 5074909 5362168 5799896 9383794 10149818 10724336 11599792 18767588 20299636 35524363 37535176 40599272 71048726 75070352 81198544 142097452 248670541 284194904 497341082 568389808 994682164 1989364328 3978728656
• Sum of all divisors σ(n): 9160128000
• Sum of proper divisors (its aliquot sum) s(n): 5181399344
• 3978728656 is an abundant number, because the sum of its proper divisors (5181399344) is greater than itself. Its abundance is 1202670688

Bases of 3978728656

• Binary: 11101101001001101001010011010000₂
• Hexadecimal: 0xED2694D0
• Base-36: 1TSTYOG

Squares and roots of 3978728656

• 3978728656 squared (3978728656²) is 15830281718075566336
• 3978728656 cubed (3978728656³) is 62984395504260168954472124416
• The square root of 3978728656 is 63077.1642989759
• The cube root of 3978728656 is 1584.5822031689

Scales and comparisons

• 3,978,728,656 seconds is equal to 126 years, 26 weeks, 4 days, 2 hours, 24 minutes, 16 seconds.
• To count from 1 to 3,978,728,656 would take you about two hundred fifty-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 3978728656 cubic inches would be around 132 feet tall.

Recreational maths with 3978728656

• 3978728656 backwards is 6568278793
• The number of decimal digits it has is: 10
• The sum of 3978728656's digits is 61
• More coming soon!