21240384

Names of 21240384

• Cardinal: 21240384 can be written as Twenty-one million, two hundred forty thousand, three hundred eighty-four.

Scientific notation

• Scientific notation: 2.1240384 × 10⁷

Factors of 21240384

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 218

Divisors of 21240384

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 64 66 88 89 96 113 132 176 178 192 226 264 267 339 352 356 452 528 534 678 704 712 904 979 1056 1068 1243 1356 1424 1808 1958 2112 2136 2486 2712 2848 2937 3616 3729 3916 4272 4972 5424 5696 5874 7232 7458 7832 8544 9944 10057 10848 11748 14916 15664 17088 19888 20114 21696 23496 29832 30171 31328 39776 40228 46992 59664 60342 62656 79552 80456 93984 110627 119328 120684 160912 187968 221254 238656 241368 321824 331881 442508 482736 643648 663762 885016 965472 1327524 1770032 1930944 2655048 3540064 5310096 7080128 10620192 21240384
• Sum of all divisors σ(n): 62544960
• Sum of proper divisors (its aliquot sum) s(n): 41304576
• 21240384 is an abundant number, because the sum of its proper divisors (41304576) is greater than itself. Its abundance is 20064192

Bases of 21240384

• Binary: 1010001000001101001000000₂
• Hexadecimal: 0x1441A40
• Base-36: CN96O

Squares and roots of 21240384

• 21240384 squared (21240384²) is 451153912467456
• 21240384 cubed (21240384³) is 9582682343911152943104
• The square root of 21240384 is 4608.7291089843
• The cube root of 21240384 is 276.9411266487

Scales and comparisons

• 21,240,384 seconds is equal to 35 weeks, 20 hours, 6 minutes, 24 seconds.
• To count from 1 to 21,240,384 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 21240384 cubic inches would be around 23.1 feet tall.

Recreational maths with 21240384

• 21240384 backwards is 48304212
• 21240384 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21240384's digits is 24
• More coming soon!