2001999720

Names of 2001999720

• Cardinal: 2001999720 can be written as Two billion, one million, nine hundred ninety-nine thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.00199972 × 10⁹

Factors of 2001999720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2383350

Divisors of 2001999720

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 2383333 4766666 7149999 9533332 11916665 14299998 16683331 19066664 23833330 28599996 33366662 35749995 47666660 50049993 57199992 66733324 71499990 83416655 95333320 100099986 133466648 142999980 166833310 200199972 250249965 285999960 333666620 400399944 500499930 667333240 1000999860 2001999720
• Sum of all divisors σ(n): 6864001920
• Sum of proper divisors (its aliquot sum) s(n): 4862002200
• 2001999720 is an abundant number, because the sum of its proper divisors (4862002200) is greater than itself. Its abundance is 2860002480

Bases of 2001999720

• Binary: 1110111010101000001011101101000₂
• Hexadecimal: 0x77541768
• Base-36: X3XSVC

Squares and roots of 2001999720

• 2001999720 squared (2001999720²) is 4008002878880078400
• 2001999720 cubed (2001999720³) is 8024020641277110870378048000
• The square root of 2001999720 is 44743.7115134629
• The cube root of 2001999720 is 1260.3408249075

Scales and comparisons

• 2,001,999,720 seconds is equal to 63 years, 34 weeks, 1 day, 7 hours, 2 minutes.
• To count from 1 to 2,001,999,720 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 2001999720 cubic inches would be around 105 feet tall.

Recreational maths with 2001999720

• 2001999720 backwards is 0279991002
• The number of decimal digits it has is: 10
• The sum of 2001999720's digits is 39
• More coming soon!