20420390

Names of 20420390

• Cardinal: 20420390 can be written as Twenty million, four hundred twenty thousand, three hundred ninety.

Scientific notation

• Scientific notation: 2.042039 × 10⁷

Factors of 20420390

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2042046

Divisors of 20420390

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 2042039 4084078 10210195 20420390
• Sum of all divisors σ(n): 36756720
• Sum of proper divisors (its aliquot sum) s(n): 16336330
• 20420390 is a deficient number, because the sum of its proper divisors (16336330) is less than itself. Its deficiency is 4084060

Bases of 20420390

• Binary: 1001101111001011100100110₂
• Hexadecimal: 0x1379726
• Base-36: C5OH2

Squares and roots of 20420390

• 20420390 squared (20420390²) is 416992327752100
• 20420390 cubed (20420390³) is 8515145959705705319000
• The square root of 20420390 is 4518.8925634495
• The cube root of 20420390 is 273.3304464629

Scales and comparisons

• 20,420,390 seconds is equal to 33 weeks, 5 days, 8 hours, 19 minutes, 50 seconds.
• To count from 1 to 20,420,390 would take you about fifty 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 20420390 cubic inches would be around 22.8 feet tall.

Recreational maths with 20420390

• 20420390 backwards is 09302402
• The number of decimal digits it has is: 8
• The sum of 20420390's digits is 20
• More coming soon!