138438307712

Names of 138438307712

• Cardinal: 138438307712 can be written as One hundred thirty-eight billion, four hundred thirty-eight million, three hundred seven thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 1.38438307712 × 10¹¹

Factors of 138438307712

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 8479

Divisors of 138438307712

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 16 32 64 128 199 398 719 796 1438 1592 2876 3184 5752 6368 7559 11504 12736 15118 23008 25472 30236 46016 60472 92032 120944 143081 241888 286162 483776 572324 967552 1144648 1504241 2289296 3008482 4578592 5434921 6016964 9157184 10869842 12033928 18314368 21739684 24067856 43479368 48135712 86958736 96271424 173917472 192542848 347834944 695669888 1081549279 2163098558 4326197116 8652394232 17304788464 34609576928 69219153856 138438307712
• Sum of all divisors σ(n): 277603200000
• Sum of proper divisors (its aliquot sum) s(n): 139164892288
• 138438307712 is an abundant number, because the sum of its proper divisors (139164892288) is greater than itself. Its abundance is 726584576

Bases of 138438307712

• Binary: 10000000111011100100001110111110000000₂
• Hexadecimal: 0x203B90EF80
• Base-36: 1RLILDVK

Squares and roots of 138438307712

• 138438307712 squared (138438307712²) is 19165165042162398674944
• 138438307712 cubed (138438307712³) is 2653193015458143601637918536368128
• The square root of 138438307712 is 372072.9870764605
• The cube root of 138438307712 is 5173.1145343275

Scales and comparisons

• 138,438,307,712 seconds is equal to 4,401 years, 47 weeks, 2 days, 5 hours, 28 minutes, 32 seconds.
• To count from 1 to 138,438,307,712 would take you about eight thousand, eight hundred 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 138438307712 cubic inches would be around 431.1 feet tall.

Recreational maths with 138438307712

• 138438307712 backwards is 217703834831
• The number of decimal digits it has is: 12
• The sum of 138438307712's digits is 47
• More coming soon!