7987142

Names of 7987142

• Cardinal: 7987142 can be written as Seven million, nine hundred eighty-seven thousand, one hundred forty-two.

Scientific notation

• Scientific notation: 7.987142 × 10⁶

Factors of 7987142

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 3993573

Divisors of 7987142

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 3993571 7987142
• Sum of all divisors σ(n): 11980716
• Sum of proper divisors (its aliquot sum) s(n): 3993574
• 7987142 is a deficient number, because the sum of its proper divisors (3993574) is less than itself. Its deficiency is 3993568

Bases of 7987142

• Binary: 11110011101111111000110₂
• Hexadecimal: 0x79DFC6
• Base-36: 4R6X2

Squares and roots of 7987142

• 7987142 squared (7987142²) is 63794437328164
• 7987142 cubed (7987142³) is 509535229750146467288
• The square root of 7987142 is 2826.1532159457
• The cube root of 7987142 is 199.8927925431

Scales and comparisons

• 7,987,142 seconds is equal to 13 weeks, 1 day, 10 hours, 39 minutes, 2 seconds.
• To count from 1 to 7,987,142 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 7987142 cubic inches would be around 16.7 feet tall.

Recreational maths with 7987142

• 7987142 backwards is 2417897
• The number of decimal digits it has is: 7
• The sum of 7987142's digits is 38
• More coming soon!