21240902

Names of 21240902

• Cardinal: 21240902 can be written as Twenty-one million, two hundred forty thousand, nine hundred two.

Scientific notation

• Scientific notation: 2.1240902 × 10⁷

Factors of 21240902

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 33822

Divisors of 21240902

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 317 634 33503 67006 10620451 21240902
• Sum of all divisors σ(n): 31962816
• Sum of proper divisors (its aliquot sum) s(n): 10721914
• 21240902 is a deficient number, because the sum of its proper divisors (10721914) is less than itself. Its deficiency is 10518988

Bases of 21240902

• Binary: 1010001000001110001000110₂
• Hexadecimal: 0x1441C46
• Base-36: CN9L2

Squares and roots of 21240902

• 21240902 squared (21240902²) is 451175917773604
• 21240902 cubed (21240902³) is 9583383454189180750808
• The square root of 21240902 is 4608.7853063469
• The cube root of 21240902 is 276.9433779317

Scales and comparisons

• 21,240,902 seconds is equal to 35 weeks, 20 hours, 15 minutes, 2 seconds.
• To count from 1 to 21,240,902 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 21240902 cubic inches would be around 23.1 feet tall.

Recreational maths with 21240902

• 21240902 backwards is 20904212
• The number of decimal digits it has is: 8
• The sum of 21240902's digits is 20
• More coming soon!