4000000

Names of 4000000

• Cardinal: 4000000 can be written as Four million.

Scientific notation

• Scientific notation: 4 × 10⁶

Factors of 4000000

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 7

Divisors of 4000000

• Number of divisors d(n): 63
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 625 640 800 1000 1250 1280 1600 2000 2500 3125 3200 4000 5000 6250 6400 8000 10000 12500 15625 16000 20000 25000 31250 32000 40000 50000 62500 80000 100000 125000 160000 200000 250000 400000 500000 800000 1000000 2000000 4000000
• Sum of all divisors σ(n): 9980341
• Sum of proper divisors (its aliquot sum) s(n): 5980341
• 4000000 is an abundant number, because the sum of its proper divisors (5980341) is greater than itself. Its abundance is 1980341

Bases of 4000000

• Binary: 1111010000100100000000₂
• Hexadecimal: 0x3D0900
• Base-36: 2DQF4

Squares and roots of 4000000

• 4000000 squared (4000000²) is 16000000000000
• 4000000 cubed (4000000³) is 64000000000000000000
• 4000000 is a perfect square number. Its square root is 2000
• The cube root of 4000000 is 158.7401051969
• Being both a perfect square and a perfect cube, 4000000 is also a perfect sixth number.

Scales and comparisons

• 4,000,000 seconds is equal to 6 weeks, 4 days, 7 hours, 6 minutes, 40 seconds.
• To count from 1 to 4,000,000 would take you about nine 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 4000000 cubic inches would be around 13.2 feet tall.

Recreational maths with 4000000

• 4000000 backwards is 0000004
• 4000000 is a Harshad number.
• The number of decimal digits it has is: 7
• The sum of 4000000's digits is 4
• More coming soon!