21229797

Names of 21229797

• Cardinal: 21229797 can be written as Twenty-one million, two hundred twenty-nine thousand, seven hundred ninety-seven.

Scientific notation

• Scientific notation: 2.1229797 × 10⁷

Factors of 21229797

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 5539

Divisors of 21229797

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 2003 3533 6009 10599 7076599 21229797
• Sum of all divisors σ(n): 28328544
• Sum of proper divisors (its aliquot sum) s(n): 7098747
• 21229797 is a deficient number, because the sum of its proper divisors (7098747) is less than itself. Its deficiency is 14131050

Bases of 21229797

• Binary: 1010000111111000011100101₂
• Hexadecimal: 0x143F0E5
• Base-36: CN10L

Squares and roots of 21229797

• 21229797 squared (21229797²) is 450704280661209
• 21229797 cubed (21229797³) is 9568360385468492844573
• The square root of 21229797 is 4607.5803845403
• The cube root of 21229797 is 276.8951064045

Scales and comparisons

• 21,229,797 seconds is equal to 35 weeks, 17 hours, 9 minutes, 57 seconds.
• To count from 1 to 21,229,797 would take you about four 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 21229797 cubic inches would be around 23.1 feet tall.

Recreational maths with 21229797

• 21229797 backwards is 79792212
• The number of decimal digits it has is: 8
• The sum of 21229797's digits is 39
• More coming soon!