7628808421

Names of 7628808421

• Cardinal: 7628808421 can be written as Seven billion, six hundred twenty-eight million, eight hundred eight thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 7.628808421 × 10⁹

Factors of 7628808421

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4283591

Divisors of 7628808421

• Number of divisors d(n): 8
• Complete list of divisors:
  1 13 137 1781 4283441 55684733 586831417 7628808421
• Sum of all divisors σ(n): 8275609944
• Sum of proper divisors (its aliquot sum) s(n): 646801523
• 7628808421 is a deficient number, because the sum of its proper divisors (646801523) is less than itself. Its deficiency is 6982006898

Bases of 7628808421

• Binary: 111000110101101100110000011100101₂
• Hexadecimal: 0x1C6B660E5
• Base-36: 3I5ZU91

Squares and roots of 7628808421

• 7628808421 squared (7628808421²) is 58198717924320513241
• 7628808421 cubed (7628808421³) is 443986869392459972115982802461
• The square root of 7628808421 is 87343.0502158013
• The cube root of 7628808421 is 1968.5762274695

Scales and comparisons

• 7,628,808,421 seconds is equal to 242 years, 29 weeks, 5 days, 9 hours, 27 minutes, 1 second.
• To count from 1 to 7,628,808,421 would take you about four hundred eighty-five 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 7628808421 cubic inches would be around 164 feet tall.

Recreational maths with 7628808421

• 7628808421 backwards is 1248088267
• The number of decimal digits it has is: 10
• The sum of 7628808421's digits is 46
• More coming soon!