21973742

Names of 21973742

• Cardinal: 21973742 can be written as Twenty-one million, nine hundred seventy-three thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 2.1973742 × 10⁷

Factors of 21973742

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1569562

Divisors of 21973742

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 7 14 1569553 3139106 10986871 21973742
• Sum of all divisors σ(n): 37669296
• Sum of proper divisors (its aliquot sum) s(n): 15695554
• 21973742 is a deficient number, because the sum of its proper divisors (15695554) is less than itself. Its deficiency is 6278188

Bases of 21973742

• Binary: 1010011110100101011101110₂
• Hexadecimal: 0x14F4AEE
• Base-36: D2Z1Q

Squares and roots of 21973742

• 21973742 squared (21973742²) is 482845337482564
• 21973742 cubed (21973742³) is 10609918871744790834488
• The square root of 21973742 is 4687.6158119027
• The cube root of 21973742 is 280.0924099741

Scales and comparisons

• 21,973,742 seconds is equal to 36 weeks, 2 days, 7 hours, 49 minutes, 2 seconds.
• To count from 1 to 21,973,742 would take you about two 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 21973742 cubic inches would be around 23.3 feet tall.

Recreational maths with 21973742

• 21973742 backwards is 24737912
• The number of decimal digits it has is: 8
• The sum of 21973742's digits is 35
• More coming soon!