20971020

Names of 20971020

• Cardinal: 20971020 can be written as Twenty million, nine hundred seventy-one thousand and twenty.

Scientific notation

• Scientific notation: 2.097102 × 10⁷

Factors of 20971020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1036

Divisors of 20971020

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 343 420 490 588 686 735 980 1019 1029 1372 1470 1715 2038 2058 2940 3057 3430 4076 4116 5095 5145 6114 6860 7133 10190 10290 12228 14266 15285 20380 20580 21399 28532 30570 35665 42798 49931 61140 71330 85596 99862 106995 142660 149793 199724 213990 249655 299586 349517 427980 499310 599172 699034 748965 998620 1048551 1398068 1497930 1747585 2097102 2995860 3495170 4194204 5242755 6990340 10485510 20971020
• Sum of all divisors σ(n): 68544000
• Sum of proper divisors (its aliquot sum) s(n): 47572980
• 20971020 is an abundant number, because the sum of its proper divisors (47572980) is greater than itself. Its abundance is 26601960

Bases of 20971020

• Binary: 1001111111111111000001100₂
• Hexadecimal: 0x13FFE0C
• Base-36: CHHCC

Squares and roots of 20971020

• 20971020 squared (20971020²) is 439783679840400
• 20971020 cubed (20971020³) is 9222712345606625208000
• The square root of 20971020 is 4579.4126260909
• The cube root of 20971020 is 275.7654487023

Scales and comparisons

• 20,971,020 seconds is equal to 34 weeks, 4 days, 17 hours, 17 minutes.
• To count from 1 to 20,971,020 would take you about fifty-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 20971020 cubic inches would be around 23 feet tall.

Recreational maths with 20971020

• 20971020 backwards is 02017902
• 20971020 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20971020's digits is 21
• More coming soon!