18009432

Names of 18009432

• Cardinal: 18009432 can be written as Eighteen million, nine thousand, four hundred thirty-two.

Scientific notation

• Scientific notation: 1.8009432 × 10⁷

Factors of 18009432

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 332

Divisors of 18009432

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 43 54 56 63 72 84 86 108 126 129 168 172 189 216 252 258 277 301 344 378 387 504 516 554 602 756 774 831 903 1032 1108 1161 1204 1512 1548 1662 1806 1939 2216 2322 2408 2493 2709 3096 3324 3612 3878 4644 4986 5418 5817 6648 7224 7479 7756 8127 9288 9972 10836 11634 11911 14958 15512 16254 17451 19944 21672 23268 23822 29916 32508 34902 35733 46536 47644 52353 59832 65016 69804 71466 83377 95288 104706 107199 139608 142932 166754 209412 214398 250131 285864 321597 333508 418824 428796 500262 643194 667016 750393 857592 1000524 1286388 1500786 2001048 2251179 2572776 3001572 4502358 6003144 9004716 18009432
• Sum of all divisors σ(n): 58713600
• Sum of proper divisors (its aliquot sum) s(n): 40704168
• 18009432 is an abundant number, because the sum of its proper divisors (40704168) is greater than itself. Its abundance is 22694736

Bases of 18009432

• Binary: 1000100101100110101011000₂
• Hexadecimal: 0x112CD58
• Base-36: AQ060

Squares and roots of 18009432

• 18009432 squared (18009432²) is 324339640962624
• 18009432 cubed (18009432³) is 5841172708820791469568
• The square root of 18009432 is 4243.7521134015
• The cube root of 18009432 is 262.1199070443

Scales and comparisons

• 18,009,432 seconds is equal to 29 weeks, 5 days, 10 hours, 37 minutes, 12 seconds.
• To count from 1 to 18,009,432 would take you about forty-four weeks!

  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 18009432 cubic inches would be around 21.8 feet tall.

Recreational maths with 18009432

• 18009432 backwards is 23490081
• 18009432 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18009432's digits is 27
• More coming soon!