21443968

Names of 21443968

• Cardinal: 21443968 can be written as Twenty-one million, four hundred forty-three thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1443968 × 10⁷

Factors of 21443968

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 285

Divisors of 21443968

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 91 98 104 112 128 182 196 208 224 263 364 392 416 448 526 637 728 784 832 896 1052 1274 1456 1568 1664 1841 2104 2548 2912 3136 3419 3682 4208 5096 5824 6272 6838 7364 8416 10192 11648 12887 13676 14728 16832 20384 23933 25774 27352 29456 33664 40768 47866 51548 54704 58912 81536 95732 103096 109408 117824 167531 191464 206192 218816 235648 335062 382928 412384 437632 670124 765856 824768 1340248 1531712 1649536 2680496 3063424 5360992 10721984 21443968
• Sum of all divisors σ(n): 53721360
• Sum of proper divisors (its aliquot sum) s(n): 32277392
• 21443968 is an abundant number, because the sum of its proper divisors (32277392) is greater than itself. Its abundance is 10833424

Bases of 21443968

• Binary: 1010001110011010110000000₂
• Hexadecimal: 0x1473580
• Base-36: CRM9S

Squares and roots of 21443968

• 21443968 squared (21443968²) is 459843763585024
• 21443968 cubed (21443968³) is 9860874951316819935232
• The square root of 21443968 is 4630.7632200319
• The cube root of 21443968 is 277.8231195437

Scales and comparisons

• 21,443,968 seconds is equal to 35 weeks, 3 days, 4 hours, 39 minutes, 28 seconds.
• To count from 1 to 21,443,968 would take you about six 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 21443968 cubic inches would be around 23.2 feet tall.

Recreational maths with 21443968

• 21443968 backwards is 86934412
• The number of decimal digits it has is: 8
• The sum of 21443968's digits is 37
• More coming soon!