20121555

Names of 20121555

• Cardinal: 20121555 can be written as Twenty million, one hundred twenty-one thousand, five hundred fifty-five.

Scientific notation

• Scientific notation: 2.0121555 × 10⁷

Factors of 20121555

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1341445

Divisors of 20121555

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 1341437 4024311 6707185 20121555
• Sum of all divisors σ(n): 32194512
• Sum of proper divisors (its aliquot sum) s(n): 12072957
• 20121555 is a deficient number, because the sum of its proper divisors (12072957) is less than itself. Its deficiency is 8048598

Bases of 20121555

• Binary: 1001100110000011111010011₂
• Hexadecimal: 0x13307D3
• Base-36: BZ9W3

Squares and roots of 20121555

• 20121555 squared (20121555²) is 404876975618025
• 20121555 cubed (20121555³) is 8146754333131749028875
• The square root of 20121555 is 4485.7056301099
• The cube root of 20121555 is 271.9905697063

Scales and comparisons

• 20,121,555 seconds is equal to 33 weeks, 1 day, 21 hours, 19 minutes, 15 seconds.
• To count from 1 to 20,121,555 would take you about forty-nine weeks!

  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 20121555 cubic inches would be around 22.7 feet tall.

Recreational maths with 20121555

• 20121555 backwards is 55512102
• The number of decimal digits it has is: 8
• The sum of 20121555's digits is 21
• More coming soon!