28700730

Names of 28700730

• Cardinal: 28700730 can be written as Twenty-eight million, seven hundred thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 2.870073 × 10⁷

Factors of 28700730

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 168

Divisors of 28700730

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 31 45 54 62 81 90 93 127 135 155 162 186 243 254 270 279 310 381 405 465 486 558 635 729 762 810 837 930 1143 1215 1270 1395 1458 1674 1905 2286 2430 2511 2790 3429 3645 3810 3937 4185 5022 5715 6858 7290 7533 7874 8370 10287 11430 11811 12555 15066 17145 19685 20574 22599 23622 25110 30861 34290 35433 37665 39370 45198 51435 59055 61722 70866 75330 92583 102870 106299 112995 118110 154305 177165 185166 212598 225990 308610 318897 354330 462915 531495 637794 925830 956691 1062990 1594485 1913382 2870073 3188970 4783455 5740146 9566910 14350365 28700730
• Sum of all divisors σ(n): 80584704
• Sum of proper divisors (its aliquot sum) s(n): 51883974
• 28700730 is an abundant number, because the sum of its proper divisors (51883974) is greater than itself. Its abundance is 23183244

Bases of 28700730

• Binary: 1101101011111000000111010₂
• Hexadecimal: 0x1B5F03A
• Base-36: H35MI

Squares and roots of 28700730

• 28700730 squared (28700730²) is 823731902532900
• 28700730 cubed (28700730³) is 23641706926983079017000
• The square root of 28700730 is 5357.3062260805
• The cube root of 28700730 is 306.1711844939

Scales and comparisons

• 28,700,730 seconds is equal to 47 weeks, 3 days, 4 hours, 25 minutes, 30 seconds.
• To count from 1 to 28,700,730 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 28700730 cubic inches would be around 25.5 feet tall.

Recreational maths with 28700730

• 28700730 backwards is 03700782
• 28700730 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28700730's digits is 27
• More coming soon!