21201040

Names of 21201040

• Cardinal: 21201040 can be written as Twenty-one million, two hundred one thousand and forty.

Scientific notation

• Scientific notation: 2.120104 × 10⁷

Factors of 21201040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 162

Divisors of 21201040

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 17 20 28 34 35 40 56 68 70 80 85 112 119 131 136 140 170 238 262 272 280 289 340 476 524 560 578 595 655 680 917 952 1048 1156 1190 1310 1360 1445 1834 1904 2023 2096 2227 2312 2380 2620 2890 3668 4046 4454 4585 4624 4760 5240 5780 7336 8092 8908 9170 9520 10115 10480 11135 11560 14672 15589 16184 17816 18340 20230 22270 23120 31178 32368 35632 36680 37859 40460 44540 62356 73360 75718 77945 80920 89080 124712 151436 155890 161840 178160 189295 249424 265013 302872 311780 378590 530026 605744 623560 757180 1060052 1247120 1325065 1514360 2120104 2650130 3028720 4240208 5300260 10600520 21201040
• Sum of all divisors σ(n): 60299712
• Sum of proper divisors (its aliquot sum) s(n): 39098672
• 21201040 is an abundant number, because the sum of its proper divisors (39098672) is greater than itself. Its abundance is 17897632

Bases of 21201040

• Binary: 1010000111000000010010000₂
• Hexadecimal: 0x1438090
• Base-36: CMETS

Squares and roots of 21201040

• 21201040 squared (21201040²) is 449484097081600
• 21201040 cubed (21201040³) is 9529530321590884864000
• The square root of 21201040 is 4604.4587086867
• The cube root of 21201040 is 276.7700263801

Scales and comparisons

• 21,201,040 seconds is equal to 35 weeks, 9 hours, 10 minutes, 40 seconds.
• To count from 1 to 21,201,040 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 21201040 cubic inches would be around 23.1 feet tall.

Recreational maths with 21201040

• 21201040 backwards is 04010212
• 21201040 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21201040's digits is 10
• More coming soon!