20420928

Names of 20420928

• Cardinal: 20420928 can be written as Twenty million, four hundred twenty thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 2.0420928 × 10⁷

Factors of 20420928

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 309

Divisors of 20420928

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 32 33 36 44 48 64 66 72 88 96 99 121 132 144 176 192 198 242 264 288 293 352 363 396 484 528 576 586 704 726 792 879 968 1056 1089 1172 1452 1584 1758 1936 2112 2178 2344 2637 2904 3168 3223 3516 3872 4356 4688 5274 5808 6336 6446 7032 7744 8712 9376 9669 10548 11616 12892 14064 17424 18752 19338 21096 23232 25784 28128 29007 34848 35453 38676 42192 51568 56256 58014 69696 70906 77352 84384 103136 106359 116028 141812 154704 168768 206272 212718 232056 283624 309408 319077 425436 464112 567248 618816 638154 850872 928224 1134496 1276308 1701744 1856448 2268992 2552616 3403488 5105232 6806976 10210464 20420928
• Sum of all divisors σ(n): 64557402
• Sum of proper divisors (its aliquot sum) s(n): 44136474
• 20420928 is an abundant number, because the sum of its proper divisors (44136474) is greater than itself. Its abundance is 23715546

Bases of 20420928

• Binary: 1001101111001100101000000₂
• Hexadecimal: 0x1379940
• Base-36: C5OW0

Squares and roots of 20420928

• 20420928 squared (20420928²) is 417014300381184
• 20420928 cubed (20420928³) is 8515819003054531018752
• The square root of 20420928 is 4518.9520909167
• The cube root of 20420928 is 273.3328468495

Scales and comparisons

• 20,420,928 seconds is equal to 33 weeks, 5 days, 8 hours, 28 minutes, 48 seconds.
• To count from 1 to 20,420,928 would take you about fifty 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 20420928 cubic inches would be around 22.8 feet tall.

Recreational maths with 20420928

• 20420928 backwards is 82902402
• The number of decimal digits it has is: 8
• The sum of 20420928's digits is 27
• More coming soon!