28709129

Names of 28709129

• Cardinal: 28709129 can be written as Twenty-eight million, seven hundred nine thousand, one hundred twenty-nine.

Scientific notation

• Scientific notation: 2.8709129 × 10⁷

Factors of 28709129

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 5247

Divisors of 28709129

• Number of divisors d(n): 8
• Complete list of divisors:
  1 23 251 4973 5773 114379 1248223 28709129
• Sum of all divisors σ(n): 30082752
• Sum of proper divisors (its aliquot sum) s(n): 1373623
• 28709129 is a deficient number, because the sum of its proper divisors (1373623) is less than itself. Its deficiency is 27335506

Bases of 28709129

• Binary: 1101101100001000100001001₂
• Hexadecimal: 0x1B61109
• Base-36: H3C3T

Squares and roots of 28709129

• 28709129 squared (28709129²) is 824214087938641
• 28709129 cubed (28709129³) is 23662468574247788553689
• The square root of 28709129 is 5358.0900515015
• The cube root of 28709129 is 306.2010476247

Scales and comparisons

• 28,709,129 seconds is equal to 47 weeks, 3 days, 6 hours, 45 minutes, 29 seconds.
• To count from 1 to 28,709,129 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 28709129 cubic inches would be around 25.5 feet tall.

Recreational maths with 28709129

• 28709129 backwards is 92190782
• The number of decimal digits it has is: 8
• The sum of 28709129's digits is 38
• More coming soon!