21027430

Names of 21027430

• Cardinal: 21027430 can be written as Twenty-one million, twenty-seven thousand, four hundred thirty.

Scientific notation

• Scientific notation: 2.102743 × 10⁷

Factors of 21027430

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 748

Divisors of 21027430

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 5 10 43 79 86 158 215 395 430 619 790 1238 3095 3397 6190 6794 16985 26617 33970 48901 53234 97802 133085 244505 266170 489010 2102743 4205486 10513715 21027430
• Sum of all divisors σ(n): 39283200
• Sum of proper divisors (its aliquot sum) s(n): 18255770
• 21027430 is a deficient number, because the sum of its proper divisors (18255770) is less than itself. Its deficiency is 2771660

Bases of 21027430

• Binary: 1010000001101101001100110₂
• Hexadecimal: 0x140DA66
• Base-36: CIOVA

Squares and roots of 21027430

• 21027430 squared (21027430²) is 442152812404900
• 21027430 cubed (21027430³) is 9297337312147166407000
• The square root of 21027430 is 4585.5675766475
• The cube root of 21027430 is 276.0124880577

Scales and comparisons

• 21,027,430 seconds is equal to 34 weeks, 5 days, 8 hours, 57 minutes, 10 seconds.
• To count from 1 to 21,027,430 would take you about twenty-five minutes!

  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 21027430 cubic inches would be around 23 feet tall.

Recreational maths with 21027430

• 21027430 backwards is 03472012
• The number of decimal digits it has is: 8
• The sum of 21027430's digits is 19
• More coming soon!