21068355

Names of 21068355

• Cardinal: 21068355 can be written as Twenty-one million, sixty-eight thousand, three hundred fifty-five.

Scientific notation

• Scientific notation: 2.1068355 × 10⁷

Factors of 21068355

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 109

Divisors of 21068355

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 7 11 15 17 21 29 33 35 37 51 55 77 85 87 105 111 119 145 165 185 187 203 231 255 259 319 357 385 407 435 493 555 561 595 609 629 777 935 957 1015 1073 1155 1221 1295 1309 1479 1595 1785 1887 2035 2233 2465 2805 2849 3045 3145 3219 3451 3885 3927 4403 4785 5365 5423 6105 6545 6699 6919 7395 7511 8547 9435 10353 11165 11803 13209 14245 16095 16269 17255 18241 19635 20757 22015 22533 27115 33495 34595 35409 37555 37961 42735 48433 51765 54723 59015 66045 81345 82621 91205 103785 112665 113883 127687 145299 177045 189805 200651 242165 247863 273615 383061 413105 569415 601953 638435 726495 1003255 1239315 1404557 1915305 3009765 4213671 7022785 21068355
• Sum of all divisors σ(n): 47278080
• Sum of proper divisors (its aliquot sum) s(n): 26209725
• 21068355 is an abundant number, because the sum of its proper divisors (26209725) is greater than itself. Its abundance is 5141370

Bases of 21068355

• Binary: 1010000010111101001000011₂
• Hexadecimal: 0x1417A43
• Base-36: CJKG3

Squares and roots of 21068355

• 21068355 squared (21068355²) is 443875582406025
• 21068355 cubed (21068355³) is 9351728345961888838875
• The square root of 21068355 is 4590.0277776937
• The cube root of 21068355 is 276.1914367097

Scales and comparisons

• 21,068,355 seconds is equal to 34 weeks, 5 days, 20 hours, 19 minutes, 15 seconds.
• To count from 1 to 21,068,355 would take you about eighteen 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 21068355 cubic inches would be around 23 feet tall.

Recreational maths with 21068355

• 21068355 backwards is 55386012
• The number of decimal digits it has is: 8
• The sum of 21068355's digits is 30
• More coming soon!