28142730

Names of 28142730

• Cardinal: 28142730 can be written as Twenty-eight million, one hundred forty-two thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 2.814273 × 10⁷

Factors of 28142730

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 190

Divisors of 28142730

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 5 6 7 9 10 11 14 15 18 21 22 30 31 33 35 42 45 55 62 63 66 70 77 90 93 99 105 110 126 131 154 155 165 186 198 210 217 231 262 279 310 315 330 341 385 393 434 462 465 495 558 630 651 655 682 693 770 786 917 930 990 1023 1085 1155 1179 1302 1310 1386 1395 1441 1705 1834 1953 1965 2046 2170 2310 2358 2387 2751 2790 2882 3069 3255 3410 3465 3906 3930 4061 4323 4585 4774 5115 5502 5895 6138 6510 6930 7161 7205 8122 8253 8646 9170 9765 10087 10230 11790 11935 12183 12969 13755 14322 14410 15345 16506 19530 20174 20305 21483 21615 23870 24366 25938 27510 28427 30261 30690 35805 36549 40610 41265 42966 43230 44671 50435 56854 60522 60915 64845 71610 73098 82530 85281 89342 90783 100870 107415 121830 129690 134013 142135 151305 170562 181566 182745 214830 223355 255843 268026 284270 302610 312697 365490 402039 426405 446710 453915 511686 625394 670065 804078 852810 907830 938091 1279215 1340130 1563485 1876182 2010195 2558430 2814273 3126970 4020390 4690455 5628546 9380910 14071365 28142730
• Sum of all divisors σ(n): 94887936
• Sum of proper divisors (its aliquot sum) s(n): 66745206
• 28142730 is an abundant number, because the sum of its proper divisors (66745206) is greater than itself. Its abundance is 38602476

Bases of 28142730

• Binary: 1101011010110110010001010₂
• Hexadecimal: 0x1AD6C8A
• Base-36: GR72I

Squares and roots of 28142730

• 28142730 squared (28142730²) is 792013251852900
• 28142730 cubed (28142730³) is 22289415103318164417000
• The square root of 28142730 is 5304.9721959687
• The cube root of 28142730 is 304.1739900241

Scales and comparisons

• 28,142,730 seconds is equal to 46 weeks, 3 days, 17 hours, 25 minutes, 30 seconds.
• To count from 1 to 28,142,730 would take you about seventeen 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 28142730 cubic inches would be around 25.3 feet tall.

Recreational maths with 28142730

• 28142730 backwards is 03724182
• The number of decimal digits it has is: 8
• The sum of 28142730's digits is 27
• More coming soon!