138885797520

Names of 138885797520

• Cardinal: 138885797520 can be written as One hundred thirty-eight billion, eight hundred eighty-five million, seven hundred ninety-seven thousand, five hundred twenty.

Scientific notation

• Scientific notation: 1.3888579752 × 10¹¹

Factors of 138885797520

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 717368

Divisors of 138885797520

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 240 269 360 538 720 807 1076 1345 1614 2152 2421 2690 3228 4035 4304 4842 5380 6456 8070 9684 10760 12105 12912 16140 19368 21520 24210 32280 38736 48420 64560 96840 193680 717089 1434178 2151267 2868356 3585445 4302534 5736712 6453801 7170890 8605068 10756335 11473424 12907602 14341780 17210136 21512670 25815204 28683560 32269005 34420272 43025340 51630408 57367120 64538010 86050680 103260816 129076020 172101360 192896941 258152040 385793882 516304080 578690823 771587764 964484705 1157381646 1543175528 1736072469 1928969410 2314763292 2893454115 3086351056 3472144938 3857938820 4629526584 5786908230 6944289876 7715877640 8680362345 9259053168 11573816460 13888579752 15431755280 17360724690 23147632920 27777159504 34721449380 46295265840 69442898760 138885797520
• Sum of all divisors σ(n): 468159377400
• Sum of proper divisors (its aliquot sum) s(n): 329273579880
• 138885797520 is an abundant number, because the sum of its proper divisors (329273579880) is greater than itself. Its abundance is 190387782360

Bases of 138885797520

• Binary: 10000001010110001111010001011010010000₂
• Hexadecimal: 0x20563D1690
• Base-36: 1RSX0N80

Squares and roots of 138885797520

• 138885797520 squared (138885797520²) is 19289264752766438150400
• 138885797520 cubed (138885797520³) is 2679004918762392388808057707008000
• The square root of 138885797520 is 372673.8487202985
• The cube root of 138885797520 is 5178.6824205637

Scales and comparisons

• 138,885,797,520 seconds is equal to 4,416 years, 7 weeks, 1 day, 12 hours, 12 minutes.
• To count from 1 to 138,885,797,520 would take you about eight thousand, eight hundred thirty-two 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 138885797520 cubic inches would be around 431.6 feet tall.

Recreational maths with 138885797520

• 138885797520 backwards is 025797588831
• The number of decimal digits it has is: 12
• The sum of 138885797520's digits is 63
• More coming soon!