21382320

Names of 21382320

• Cardinal: 21382320 can be written as Twenty-one million, three hundred eighty-two thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.138232 × 10⁷

Factors of 21382320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 104

Divisors of 21382320

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 41 48 53 60 80 82 106 120 123 159 164 205 212 240 246 265 318 328 410 424 492 530 615 636 656 795 820 848 984 1060 1230 1272 1590 1640 1681 1968 2120 2173 2460 2544 3180 3280 3362 4240 4346 4920 5043 6360 6519 6724 8405 8692 9840 10086 10865 12720 13038 13448 16810 17384 20172 21730 25215 26076 26896 32595 33620 34768 40344 43460 50430 52152 65190 67240 80688 86920 89093 100860 104304 130380 134480 173840 178186 201720 260760 267279 356372 403440 445465 521520 534558 712744 890930 1069116 1336395 1425488 1781860 2138232 2672790 3563720 4276464 5345580 7127440 10691160 21382320
• Sum of all divisors σ(n): 69223248
• Sum of proper divisors (its aliquot sum) s(n): 47840928
• 21382320 is an abundant number, because the sum of its proper divisors (47840928) is greater than itself. Its abundance is 26458608

Bases of 21382320

• Binary: 1010001100100010010110000₂
• Hexadecimal: 0x14644B0
• Base-36: CQAPC

Squares and roots of 21382320

• 21382320 squared (21382320²) is 457203608582400
• 21382320 cubed (21382320³) is 9776073863863623168000
• The square root of 21382320 is 4624.1020749979
• The cube root of 21382320 is 277.5566315715

Scales and comparisons

• 21,382,320 seconds is equal to 35 weeks, 2 days, 11 hours, 32 minutes.
• To count from 1 to 21,382,320 would take you about five hours!

  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 21382320 cubic inches would be around 23.1 feet tall.

Recreational maths with 21382320

• 21382320 backwards is 02328312
• The number of decimal digits it has is: 8
• The sum of 21382320's digits is 21
• More coming soon!