7998257142

Names of 7998257142

• Cardinal: 7998257142 can be written as Seven billion, nine hundred ninety-eight million, two hundred fifty-seven thousand, one hundred forty-two.

Scientific notation

• Scientific notation: 7.998257142 × 10⁹

Factors of 7998257142

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 148115878

Divisors of 7998257142

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 9 18 27 54 148115873 296231746 444347619 888695238 1333042857 2666085714 3999128571 7998257142
• Sum of all divisors σ(n): 17773904880
• Sum of proper divisors (its aliquot sum) s(n): 9775647738
• 7998257142 is an abundant number, because the sum of its proper divisors (9775647738) is greater than itself. Its abundance is 1777390596

Bases of 7998257142

• Binary: 111011100101110111011011111110110₂
• Hexadecimal: 0x1DCBBB7F6
• Base-36: 3O9YEPI

Squares and roots of 7998257142

• 7998257142 squared (7998257142²) is 63972117309554008164
• 7998257142 cubed (7998257142³) is 511665444160002170632439307288
• The square root of 7998257142 is 89432.9756968871
• The cube root of 7998257142 is 1999.8547512849

Scales and comparisons

• 7,998,257,142 seconds is equal to 254 years, 16 weeks, 4 days, 10 hours, 5 minutes, 42 seconds.
• To count from 1 to 7,998,257,142 would take you about five hundred eight years!

  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 7998257142 cubic inches would be around 166.7 feet tall.

Recreational maths with 7998257142

• 7998257142 backwards is 2417528997
• 7998257142 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 7998257142's digits is 54
• More coming soon!