40428619728

Names of 40428619728

• Cardinal: 40428619728 can be written as Forty billion, four hundred twenty-eight million, six hundred nineteen thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 4.0428619728 × 10¹⁰

Factors of 40428619728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2455589

Divisors of 40428619728

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 49 56 84 98 112 147 168 196 294 336 343 392 588 686 784 1029 1176 1372 2058 2352 2744 4116 5488 8232 16464 2455577 4911154 7366731 9822308 14733462 17189039 19644616 29466924 34378078 39289232 51567117 58933848 68756156 103134234 117867696 120323273 137512312 206268468 240646546 275024624 360969819 412536936 481293092 721939638 825073872 842262911 962586184 1443879276 1684525822 1925172368 2526788733 2887758552 3369051644 5053577466 5775517104 6738103288 10107154932 13476206576 20214309864 40428619728
• Sum of all divisors σ(n): 121796668800
• Sum of proper divisors (its aliquot sum) s(n): 81368049072
• 40428619728 is an abundant number, because the sum of its proper divisors (81368049072) is greater than itself. Its abundance is 40939429344

Bases of 40428619728

• Binary: 100101101001101110111100011111010000₂
• Hexadecimal: 0x969BBC7D0
• Base-36: IKM5MMO

Squares and roots of 40428619728

• 40428619728 squared (40428619728²) is 1634473293111230793984
• 40428619728 cubed (40428619728³) is 66079499222765831776022646116352
• The square root of 40428619728 is 201068.6940525551
• The cube root of 40428619728 is 3432.1240100049

Scales and comparisons

• 40,428,619,728 seconds is equal to 1,285 years, 26 weeks, 1 day, 20 hours, 8 minutes, 48 seconds.
• To count from 1 to 40,428,619,728 would take you about two thousand, five hundred seventy-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 40428619728 cubic inches would be around 286 feet tall.

Recreational maths with 40428619728

• 40428619728 backwards is 82791682404
• The number of decimal digits it has is: 11
• The sum of 40428619728's digits is 51
• More coming soon!