1998140620

Names of 1998140620

• Cardinal: 1998140620 can be written as One billion, nine hundred ninety-eight million, one hundred forty thousand, six hundred twenty.

Scientific notation

• Scientific notation: 1.99814062 × 10⁹

Factors of 1998140620

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2038933

Divisors of 1998140620

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 4 5 7 10 14 20 28 35 49 70 98 140 196 245 490 980 2038919 4077838 8155676 10194595 14272433 20389190 28544866 40778380 57089732 71362165 99907031 142724330 199814062 285448660 399628124 499535155 999070310 1998140620
• Sum of all divisors σ(n): 4881174480
• Sum of proper divisors (its aliquot sum) s(n): 2883033860
• 1998140620 is an abundant number, because the sum of its proper divisors (2883033860) is greater than itself. Its abundance is 884893240

Bases of 1998140620

• Binary: 1110111000110010011010011001100₂
• Hexadecimal: 0x771934CC
• Base-36: X1N364

Squares and roots of 1998140620

• 1998140620 squared (1998140620²) is 3992565937293984400
• 1998140620 cubed (1998140620³) is 7977708177335483111286328000
• The square root of 1998140620 is 44700.5662156533
• The cube root of 1998140620 is 1259.5304835011

Scales and comparisons

• 1,998,140,620 seconds is equal to 63 years, 27 weeks, 5 days, 15 hours, 3 minutes, 40 seconds.
• To count from 1 to 1,998,140,620 would take you about one hundred twenty-seven 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 1998140620 cubic inches would be around 105 feet tall.

Recreational maths with 1998140620

• 1998140620 backwards is 0260418991
• The number of decimal digits it has is: 10
• The sum of 1998140620's digits is 40
• More coming soon!