138636856612728

Names of 138636856612728

• Cardinal: 138636856612728 can be written as One hundred thirty-eight trillion, six hundred thirty-six billion, eight hundred fifty-six million, six hundred twelve thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.38636856612728 × 10¹⁴

Factors of 138636856612728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 641837299138

Divisors of 138636856612728

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 36 54 72 108 216 641837299133 1283674598266 1925511897399 2567349196532 3851023794798 5134698393064 5776535692197 7702047589596 11553071384394 15404095179192 17329607076591 23106142768788 34659214153182 46212285537576 69318428306364 138636856612728
• Sum of all divisors σ(n): 385102379480400
• Sum of proper divisors (its aliquot sum) s(n): 246465522867672
• 138636856612728 is an abundant number, because the sum of its proper divisors (246465522867672) is greater than itself. Its abundance is 107828666254944

Bases of 138636856612728

• Binary: 11111100001011011101000100101110101011101111000₂
• Hexadecimal: 0x7E16E8975778
• Base-36: 1D54W4XGU0

Squares and roots of 138636856612728

• 138636856612728 squared (138636856612728²) is 19220178011458103381771601984
• 138636856612728 cubed (138636856612728³) is 2664625063045624661176483378051272444452352
• The square root of 138636856612728 is 11774415.3405902919
• The cube root of 138636856612728 is 51755.8645504627

Scales and comparisons

• 138,636,856,612,728 seconds is equal to 4,408,223 years, 10 weeks, 5 days, 19 hours, 58 minutes, 48 seconds.
• To count from 1 to 138,636,856,612,728 would take you about eleven million, twenty thousand, five hundred fifty-eight 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 138636856612728 cubic inches would be around 4313 feet tall.

Recreational maths with 138636856612728

• 138636856612728 backwards is 827216658636831
• 138636856612728 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 138636856612728's digits is 72
• More coming soon!