21138097

Names of 21138097

• Cardinal: 21138097 can be written as Twenty-one million, one hundred thirty-eight thousand and ninety-seven.

Scientific notation

• Scientific notation: 2.1138097 × 10⁷

Factors of 21138097

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 24718

Divisors of 21138097

• Number of divisors d(n): 4
• Complete list of divisors:
  1 887 23831 21138097
• Sum of all divisors σ(n): 21162816
• Sum of proper divisors (its aliquot sum) s(n): 24719
• 21138097 is a deficient number, because the sum of its proper divisors (24719) is less than itself. Its deficiency is 21113378

Bases of 21138097

• Binary: 1010000101000101010110001₂
• Hexadecimal: 0x1428AB1
• Base-36: CL29D

Squares and roots of 21138097

• 21138097 squared (21138097²) is 446819144781409
• 21138097 cubed (21138097³) is 9444906423846467238673
• The square root of 21138097 is 4597.6186227219
• The cube root of 21138097 is 276.4958573741

Scales and comparisons

• 21,138,097 seconds is equal to 34 weeks, 6 days, 15 hours, 41 minutes, 37 seconds.
• To count from 1 to 21,138,097 would take you about two 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 21138097 cubic inches would be around 23 feet tall.

Recreational maths with 21138097

• 21138097 backwards is 79083112
• The number of decimal digits it has is: 8
• The sum of 21138097's digits is 31
• More coming soon!