138392857980

Names of 138392857980

• Cardinal: 138392857980 can be written as One hundred thirty-eight billion, three hundred ninety-two million, eight hundred fifty-seven thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 1.3839285798 × 10¹¹

Factors of 138392857980

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 59142270

Divisors of 138392857980

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 45 52 60 65 78 90 117 130 156 180 195 234 260 390 468 585 780 1170 2340 59142247 118284494 177426741 236568988 295711235 354853482 532280223 591422470 709706964 768849211 887133705 1064560446 1182844940 1537698422 1774267410 2129120892 2306547633 2661401115 3075396844 3548534820 3844246055 4613095266 5322802230 6919642899 7688492110 9226190532 10645604460 11532738165 13839285798 15376984220 23065476330 27678571596 34598214495 46130952660 69196428990 138392857980
• Sum of all divisors σ(n): 452083343712
• Sum of proper divisors (its aliquot sum) s(n): 313690485732
• 138392857980 is an abundant number, because the sum of its proper divisors (313690485732) is greater than itself. Its abundance is 175297627752

Bases of 138392857980

• Binary: 10000000111000110110110110110101111100₂
• Hexadecimal: 0x2038DB6D7C
• Base-36: 1RKRJ8N0

Squares and roots of 138392857980

• 138392857980 squared (138392857980²) is 19152583139872449680400
• 138392857980 cubed (138392857980³) is 2650580718426510403934293589592000
• The square root of 138392857980 is 372011.9056965785
• The cube root of 138392857980 is 5172.5483557709

Scales and comparisons

• 138,392,857,980 seconds is equal to 4,400 years, 24 weeks, 1 day, 4 hours, 33 minutes.
• To count from 1 to 138,392,857,980 would take you about eight thousand, eight hundred 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 138392857980 cubic inches would be around 431 feet tall.

Recreational maths with 138392857980

• 138392857980 backwards is 089758293831
• The number of decimal digits it has is: 12
• The sum of 138392857980's digits is 63
• More coming soon!