21111009

Names of 21111009

• Cardinal: 21111009 can be written as Twenty-one million, one hundred eleven thousand and nine.

Scientific notation

• Scientific notation: 2.1111009 × 10⁷

Factors of 21111009

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 7037006

Divisors of 21111009

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 7037003 21111009
• Sum of all divisors σ(n): 28148016
• Sum of proper divisors (its aliquot sum) s(n): 7037007
• 21111009 is a deficient number, because the sum of its proper divisors (7037007) is less than itself. Its deficiency is 14074002

Bases of 21111009

• Binary: 1010000100010000011100001₂
• Hexadecimal: 0x14220E1
• Base-36: CKHCX

Squares and roots of 21111009

• 21111009 squared (21111009²) is 445674700998081
• 21111009 cubed (21111009³) is 9408642623842796973729
• The square root of 21111009 is 4594.6718054721
• The cube root of 21111009 is 276.3776991285

Scales and comparisons

• 21,111,009 seconds is equal to 34 weeks, 6 days, 8 hours, 10 minutes, 9 seconds.
• To count from 1 to 21,111,009 would take you about two days!

  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 21111009 cubic inches would be around 23 feet tall.

Recreational maths with 21111009

• 21111009 backwards is 90011112
• The number of decimal digits it has is: 8
• The sum of 21111009's digits is 15
• More coming soon!