28745442

Names of 28745442

• Cardinal: 28745442 can be written as Twenty-eight million, seven hundred forty-five thousand, four hundred forty-two.

Scientific notation

• Scientific notation: 2.8745442 × 10⁷

Factors of 28745442

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 318

Divisors of 28745442

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 11 18 19 22 27 33 38 54 57 66 81 99 114 162 171 198 209 243 283 297 342 418 486 513 566 594 627 849 891 1026 1254 1539 1698 1782 1881 2547 2673 3078 3113 3762 4617 5094 5346 5377 5643 6226 7641 9234 9339 10754 11286 15282 16131 16929 18678 22923 28017 32262 33858 45846 48393 50787 56034 59147 68769 84051 96786 101574 118294 137538 145179 168102 177441 252153 290358 354882 435537 504306 532323 756459 871074 1064646 1306611 1512918 1596969 2613222 3193938 4790907 9581814 14372721 28745442
• Sum of all divisors σ(n): 74430720
• Sum of proper divisors (its aliquot sum) s(n): 45685278
• 28745442 is an abundant number, because the sum of its proper divisors (45685278) is greater than itself. Its abundance is 16939836

Bases of 28745442

• Binary: 1101101101001111011100010₂
• Hexadecimal: 0x1B69EE2
• Base-36: H444I

Squares and roots of 28745442

• 28745442 squared (28745442²) is 826300435775364
• 28745442 cubed (28745442³) is 23752371251155450890888
• The square root of 28745442 is 5361.4775948427
• The cube root of 28745442 is 306.3300936147

Scales and comparisons

• 28,745,442 seconds is equal to 47 weeks, 3 days, 16 hours, 50 minutes, 42 seconds.
• To count from 1 to 28,745,442 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 28745442 cubic inches would be around 25.5 feet tall.

Recreational maths with 28745442

• 28745442 backwards is 24454782
• The number of decimal digits it has is: 8
• The sum of 28745442's digits is 36
• More coming soon!