138195726889736728

Names of 138195726889736728

• Cardinal: 138195726889736728 can be written as One hundred thirty-eight quadrillion, one hundred ninety-five trillion, seven hundred twenty-six billion, eight hundred eighty-nine million, seven hundred thirty-six thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.38195726889736728 × 10¹⁷

Factors of 138195726889736728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 631965663

Divisors of 138195726889736728

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 4 8 1321 2642 5284 10568 20693 41386 82772 165544 27335453 54670906 109341812 218683624 631943647 1263887294 2527774588 5055549176 834797557687 1669595115374 3339190230748 6678380461496 13076809887371 26153619774742 52307239549484 104614479098968 17274465861217091 34548931722434182 69097863444868364 138195726889736728
• Sum of all divisors σ(n): 259325671919448960
• Sum of proper divisors (its aliquot sum) s(n): 121129945029712232
• 138195726889736728 is a deficient number, because the sum of its proper divisors (121129945029712232) is less than itself. Its deficiency is 17065781860024496

Bases of 138195726889736728

• Binary: 111101010111110000100100000001010101111010101101000011000₂
• Hexadecimal: 0x1EAF8480ABD5A18
• Base-36: 11SQAOHU7UVS

Squares and roots of 138195726889736728

• 138195726889736728 squared (138195726889736728²) is 19098058930582702941280501152145984
• 138195726889736728 cubed (138195726889736728³) is 2639270136094904700060427474735539942174981982500352
• The square root of 138195726889736728 is 371746858.6144834231
• The cube root of 138195726889736728 is 517009.1209149479

Scales and comparisons

• 138,195,726,889,736,728 seconds is equal to 4,394,196,647 years, 33 weeks, 3 days, 7 hours, 45 minutes, 28 seconds.
• To count from 1 to 138,195,726,889,736,728 would take you about thirteen billion, one hundred eighty-two million, five hundred eighty-nine thousand, nine hundred forty-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 138195726889736728 cubic inches would be around 43084.1 feet tall.

Recreational maths with 138195726889736728

• 138195726889736728 backwards is 827637988627591831
• The number of decimal digits it has is: 18
• The sum of 138195726889736728's digits is 100
• More coming soon!