21023772

Names of 21023772

• Cardinal: 21023772 can be written as Twenty-one million, twenty-three thousand, seven hundred seventy-two.

Scientific notation

• Scientific notation: 2.1023772 × 10⁷

Factors of 21023772

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 457

Divisors of 21023772

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 61 66 77 84 122 132 154 183 231 244 308 366 373 427 462 671 732 746 854 924 1119 1281 1342 1492 1708 2013 2238 2562 2611 2684 4026 4103 4476 4697 5124 5222 7833 8052 8206 9394 10444 12309 14091 15666 16412 18788 22753 24618 28182 28721 31332 45506 49236 56364 57442 68259 86163 91012 114884 136518 159271 172326 250283 273036 318542 344652 477813 500566 637084 750849 955626 1001132 1501698 1751981 1911252 3003396 3503962 5255943 7007924 10511886 21023772
• Sum of all divisors σ(n): 62329344
• Sum of proper divisors (its aliquot sum) s(n): 41305572
• 21023772 is an abundant number, because the sum of its proper divisors (41305572) is greater than itself. Its abundance is 20281800

Bases of 21023772

• Binary: 1010000001100110000011100₂
• Hexadecimal: 0x140CC1C
• Base-36: CIM1O

Squares and roots of 21023772

• 21023772 squared (21023772²) is 441998989107984
• 21023772 cubed (21023772³) is 9292485971236738995648
• The square root of 21023772 is 4585.1686991865
• The cube root of 21023772 is 275.9964817867

Scales and comparisons

• 21,023,772 seconds is equal to 34 weeks, 5 days, 7 hours, 56 minutes, 12 seconds.
• To count from 1 to 21,023,772 would take you about twenty-three hours!

  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 21023772 cubic inches would be around 23 feet tall.

Recreational maths with 21023772

• 21023772 backwards is 27732012
• The number of decimal digits it has is: 8
• The sum of 21023772's digits is 24
• More coming soon!