20491272

Names of 20491272

• Cardinal: 20491272 can be written as Twenty million, four hundred ninety-one thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 2.0491272 × 10⁷

Factors of 20491272

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5017

Divisors of 20491272

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 19 24 27 36 38 54 57 72 76 108 114 152 171 216 228 342 456 513 684 1026 1368 2052 4104 4993 9986 14979 19972 29958 39944 44937 59916 89874 94867 119832 134811 179748 189734 269622 284601 359496 379468 539244 569202 758936 853803 1078488 1138404 1707606 2276808 2561409 3415212 5122818 6830424 10245636 20491272
• Sum of all divisors σ(n): 59928000
• Sum of proper divisors (its aliquot sum) s(n): 39436728
• 20491272 is an abundant number, because the sum of its proper divisors (39436728) is greater than itself. Its abundance is 18945456

Bases of 20491272

• Binary: 1001110001010110000001000₂
• Hexadecimal: 0x138AC08
• Base-36: C7760

Squares and roots of 20491272

• 20491272 squared (20491272²) is 419892228177984
• 20491272 cubed (20491272³) is 8604125858281134555648
• The square root of 20491272 is 4526.7286200965
• The cube root of 20491272 is 273.6463371809

Scales and comparisons

• 20,491,272 seconds is equal to 33 weeks, 6 days, 4 hours, 1 minute, 12 seconds.
• To count from 1 to 20,491,272 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 20491272 cubic inches would be around 22.8 feet tall.

Recreational maths with 20491272

• 20491272 backwards is 27219402
• 20491272 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20491272's digits is 27
• More coming soon!