20645625

Names of 20645625

• Cardinal: 20645625 can be written as Twenty million, six hundred forty-five thousand, six hundred twenty-five.

Scientific notation

• Scientific notation: 2.0645625 × 10⁷

Factors of 20645625

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 39

Divisors of 20645625

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 5 7 11 13 15 21 25 33 35 39 55 65 75 77 91 105 121 125 143 165 175 195 231 273 275 325 363 375 385 429 455 525 605 625 715 825 847 875 975 1001 1155 1365 1375 1573 1625 1815 1875 1925 2145 2275 2541 2625 3003 3025 3575 4125 4235 4375 4719 4875 5005 5775 6825 6875 7865 8125 9075 9625 10725 11011 11375 12705 13125 15015 15125 17875 20625 21175 23595 24375 25025 28875 33033 34125 39325 45375 48125 53625 55055 56875 63525 75075 75625 89375 105875 117975 125125 144375 165165 170625 196625 226875 268125 275275 317625 375375 529375 589875 625625 825825 983125 1376375 1588125 1876875 2949375 4129125 6881875 20645625
• Sum of all divisors σ(n): 46535104
• Sum of proper divisors (its aliquot sum) s(n): 25889479
• 20645625 is an abundant number, because the sum of its proper divisors (25889479) is greater than itself. Its abundance is 5243854

Bases of 20645625

• Binary: 1001110110000011011111001₂
• Hexadecimal: 0x13B06F9
• Base-36: CAI9L

Squares and roots of 20645625

• 20645625 squared (20645625²) is 426241831640625
• 20645625 cubed (20645625³) is 8800029015365478515625
• The square root of 20645625 is 4543.7457015111
• The cube root of 20645625 is 274.3317106099

Scales and comparisons

• 20,645,625 seconds is equal to 34 weeks, 22 hours, 53 minutes, 45 seconds.
• To count from 1 to 20,645,625 would take you about fifty-one 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 20645625 cubic inches would be around 22.9 feet tall.

Recreational maths with 20645625

• 20645625 backwards is 52654602
• The number of decimal digits it has is: 8
• The sum of 20645625's digits is 30
• More coming soon!