20621664

Names of 20621664

• Cardinal: 20621664 can be written as Twenty million, six hundred twenty-one thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.0621664 × 10⁷

Factors of 20621664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 258

Divisors of 20621664

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 53 56 63 72 84 96 106 112 126 144 159 168 193 212 224 252 288 318 336 371 386 424 477 504 579 636 672 742 772 848 954 1008 1113 1158 1272 1351 1484 1544 1696 1737 1908 2016 2226 2316 2544 2702 2968 3088 3339 3474 3816 4053 4452 4632 5088 5404 5936 6176 6678 6948 7632 8106 8904 9264 10229 10808 11872 12159 13356 13896 15264 16212 17808 18528 20458 21616 24318 26712 27792 30687 32424 35616 40916 43232 48636 53424 55584 61374 64848 71603 81832 92061 97272 106848 122748 129696 143206 163664 184122 194544 214809 245496 286412 327328 368244 389088 429618 490992 572824 644427 736488 859236 981984 1145648 1288854 1472976 1718472 2291296 2577708 2945952 3436944 5155416 6873888 10310832 20621664
• Sum of all divisors σ(n): 68638752
• Sum of proper divisors (its aliquot sum) s(n): 48017088
• 20621664 is an abundant number, because the sum of its proper divisors (48017088) is greater than itself. Its abundance is 27395424

Bases of 20621664

• Binary: 1001110101010100101100000₂
• Hexadecimal: 0x13AA960
• Base-36: C9ZS0

Squares and roots of 20621664

• 20621664 squared (20621664²) is 425253026128896
• 20621664 cubed (20621664³) is 8769425019813314002944
• The square root of 20621664 is 4541.1082347815
• The cube root of 20621664 is 274.2255411155

Scales and comparisons

• 20,621,664 seconds is equal to 34 weeks, 16 hours, 14 minutes, 24 seconds.
• To count from 1 to 20,621,664 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 20621664 cubic inches would be around 22.9 feet tall.

Recreational maths with 20621664

• 20621664 backwards is 46612602
• The number of decimal digits it has is: 8
• The sum of 20621664's digits is 27
• More coming soon!