21013057

Names of 21013057

• Cardinal: 21013057 can be written as Twenty-one million, thirteen thousand and fifty-seven.

Scientific notation

• Scientific notation: 2.1013057 × 10⁷

Factors of 21013057

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4179

Divisors of 21013057

• Number of divisors d(n): 8
• Complete list of divisors:
  1 13 433 3733 5629 48529 1616389 21013057
• Sum of all divisors σ(n): 22687784
• Sum of proper divisors (its aliquot sum) s(n): 1674727
• 21013057 is a deficient number, because the sum of its proper divisors (1674727) is less than itself. Its deficiency is 19338330

Bases of 21013057

• Binary: 1010000001010001001000001₂
• Hexadecimal: 0x140A241
• Base-36: CIDS1

Squares and roots of 21013057

• 21013057 squared (21013057²) is 441548564485249
• 21013057 cubed (21013057³) is 9278285153796712896193
• The square root of 21013057 is 4584.0001090751
• The cube root of 21013057 is 275.9495855899

Scales and comparisons

• 21,013,057 seconds is equal to 34 weeks, 5 days, 4 hours, 57 minutes, 37 seconds.
• To count from 1 to 21,013,057 would take you about nineteen hours!

  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 21013057 cubic inches would be around 23 feet tall.

Recreational maths with 21013057

• 21013057 backwards is 75031012
• The number of decimal digits it has is: 8
• The sum of 21013057's digits is 19
• More coming soon!