21730231

Names of 21730231

• Cardinal: 21730231 can be written as Twenty-one million, seven hundred thirty thousand, two hundred thirty-one.

Scientific notation

• Scientific notation: 2.1730231 × 10⁷

Factors of 21730231

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 3953

Divisors of 21730231

• Number of divisors d(n): 8
• Complete list of divisors:
  1 59 97 3797 5723 224023 368309 21730231
• Sum of all divisors σ(n): 22332240
• Sum of proper divisors (its aliquot sum) s(n): 602009
• 21730231 is a deficient number, because the sum of its proper divisors (602009) is less than itself. Its deficiency is 21128222

Bases of 21730231

• Binary: 1010010111001001110110111₂
• Hexadecimal: 0x14B93B7
• Base-36: CXR5J

Squares and roots of 21730231

• 21730231 squared (21730231²) is 472202939313361
• 21730231 cubed (21730231³) is 10261078950158315916391
• The square root of 21730231 is 4661.5695854509
• The cube root of 21730231 is 279.0539114655

Scales and comparisons

• 21,730,231 seconds is equal to 35 weeks, 6 days, 12 hours, 10 minutes, 31 seconds.
• To count from 1 to 21,730,231 would take you about six 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 21730231 cubic inches would be around 23.3 feet tall.

Recreational maths with 21730231

• 21730231 backwards is 13203712
• The number of decimal digits it has is: 8
• The sum of 21730231's digits is 19
• More coming soon!