28689642

Names of 28689642

• Cardinal: 28689642 can be written as Twenty-eight million, six hundred eighty-nine thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 2.8689642 × 10⁷

Factors of 28689642

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 165

Divisors of 28689642

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 17 18 29 34 51 53 58 61 87 102 106 122 153 159 174 183 261 306 318 366 477 493 522 549 901 954 986 1037 1098 1479 1537 1769 1802 2074 2703 2958 3074 3111 3233 3538 4437 4611 5307 5406 6222 6466 8109 8874 9222 9333 9699 10614 13833 15921 16218 18666 19398 26129 27666 29097 30073 31842 52258 54961 58194 60146 78387 90219 93757 109922 156774 164883 180438 187514 235161 270657 281271 329766 470322 494649 541314 562542 843813 989298 1593869 1687626 3187738 4781607 9563214 14344821 28689642
• Sum of all divisors σ(n): 70508880
• Sum of proper divisors (its aliquot sum) s(n): 41819238
• 28689642 is an abundant number, because the sum of its proper divisors (41819238) is greater than itself. Its abundance is 13129596

Bases of 28689642

• Binary: 1101101011100010011101010₂
• Hexadecimal: 0x1B5C4EA
• Base-36: H2X2I

Squares and roots of 28689642

• 28689642 squared (28689642²) is 823095558088164
• 28689642 cubed (28689642³) is 23614316893339629597288
• The square root of 28689642 is 5356.2712776707
• The cube root of 28689642 is 306.1317515437

Scales and comparisons

• 28,689,642 seconds is equal to 47 weeks, 3 days, 1 hour, 20 minutes, 42 seconds.
• To count from 1 to 28,689,642 would take you about nineteen 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 28689642 cubic inches would be around 25.5 feet tall.

Recreational maths with 28689642

• 28689642 backwards is 24698682
• The number of decimal digits it has is: 8
• The sum of 28689642's digits is 45
• More coming soon!