28028715

Names of 28028715

• Cardinal: 28028715 can be written as Twenty-eight million, twenty-eight thousand, seven hundred fifteen.

Scientific notation

• Scientific notation: 2.8028715 × 10⁷

Factors of 28028715

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 284

Divisors of 28028715

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 11 13 15 33 39 55 65 73 143 165 179 195 219 365 429 537 715 803 895 949 1095 1969 2145 2327 2409 2685 2847 4015 4745 5907 6981 9845 10439 11635 12045 13067 14235 25597 29535 31317 34905 39201 52195 65335 76791 127985 143737 156585 169871 196005 383955 431211 509613 718685 849355 1868581 2156055 2548065 5605743 9342905 28028715
• Sum of all divisors σ(n): 53706240
• Sum of proper divisors (its aliquot sum) s(n): 25677525
• 28028715 is a deficient number, because the sum of its proper divisors (25677525) is less than itself. Its deficiency is 2351190

Bases of 28028715

• Binary: 1101010111010111100101011₂
• Hexadecimal: 0x1ABAF2B
• Base-36: GOR3F

Squares and roots of 28028715

• 28028715 squared (28028715²) is 785608864551225
• 28028715 cubed (28028715³) is 22019606965979888425875
• The square root of 28028715 is 5294.2152392965
• The cube root of 28028715 is 303.7626660707

Scales and comparisons

• 28,028,715 seconds is equal to 46 weeks, 2 days, 9 hours, 45 minutes, 15 seconds.
• To count from 1 to 28,028,715 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 28028715 cubic inches would be around 25.3 feet tall.

Recreational maths with 28028715

• 28028715 backwards is 51782082
• 28028715 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28028715's digits is 33
• More coming soon!