18989147

Names of 18989147

• Cardinal: 18989147 can be written as Eighteen million, nine hundred eighty-nine thousand, one hundred forty-seven.

Scientific notation

• Scientific notation: 1.8989147 × 10⁷

Factors of 18989147

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 27492

Divisors of 18989147

• Number of divisors d(n): 4
• Complete list of divisors:
  1 709 26783 18989147
• Sum of all divisors σ(n): 19016640
• Sum of proper divisors (its aliquot sum) s(n): 27493
• 18989147 is a deficient number, because the sum of its proper divisors (27493) is less than itself. Its deficiency is 18961654

Bases of 18989147

• Binary: 1001000011100000001011011₂
• Hexadecimal: 0x121C05B
• Base-36: BB04B

Squares and roots of 18989147

• 18989147 squared (18989147²) is 360587703787609
• 18989147 cubed (18989147³) is 6847252913615364079523
• The square root of 18989147 is 4357.6538412315
• The cube root of 18989147 is 266.7893478915

Scales and comparisons

• 18,989,147 seconds is equal to 31 weeks, 2 days, 18 hours, 45 minutes, 47 seconds.
• To count from 1 to 18,989,147 would take you about forty-seven 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 18989147 cubic inches would be around 22.2 feet tall.

Recreational maths with 18989147

• 18989147 backwards is 74198981
• The number of decimal digits it has is: 8
• The sum of 18989147's digits is 47
• More coming soon!