28137989

Names of 28137989

• Cardinal: 28137989 can be written as Twenty-eight million, one hundred thirty-seven thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 2.8137989 × 10⁷

Factors of 28137989

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 2558010

Divisors of 28137989

• Number of divisors d(n): 4
• Complete list of divisors:
  1 11 2557999 28137989
• Sum of all divisors σ(n): 30696000
• Sum of proper divisors (its aliquot sum) s(n): 2558011
• 28137989 is a deficient number, because the sum of its proper divisors (2558011) is less than itself. Its deficiency is 25579978

Bases of 28137989

• Binary: 1101011010101101000000101₂
• Hexadecimal: 0x1AD5A05
• Base-36: GR3ET

Squares and roots of 28137989

• 28137989 squared (28137989²) is 791746424964121
• 28137989 cubed (28137989³) is 22278152196429762092669
• The square root of 28137989 is 5304.5253322045
• The cube root of 28137989 is 304.1569084087

Scales and comparisons

• 28,137,989 seconds is equal to 46 weeks, 3 days, 16 hours, 6 minutes, 29 seconds.
• To count from 1 to 28,137,989 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 28137989 cubic inches would be around 25.3 feet tall.

Recreational maths with 28137989

• 28137989 backwards is 98973182
• The number of decimal digits it has is: 8
• The sum of 28137989's digits is 47
• More coming soon!