2138639

Names of 2138639

• Cardinal: 2138639 can be written as Two million, one hundred thirty-eight thousand, six hundred thirty-nine.

Scientific notation

• Scientific notation: 2.138639 × 10⁶

Factors of 2138639

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 5784

Divisors of 2138639

• Number of divisors d(n): 4
• Complete list of divisors:
  1 397 5387 2138639
• Sum of all divisors σ(n): 2144424
• Sum of proper divisors (its aliquot sum) s(n): 5785
• 2138639 is a deficient number, because the sum of its proper divisors (5785) is less than itself. Its deficiency is 2132854

Bases of 2138639

• Binary: 1000001010001000001111₂
• Hexadecimal: 0x20A20F
• Base-36: 19U6N

Squares and roots of 2138639

• 2138639 squared (2138639²) is 4573776772321
• 2138639 cubed (2138639³) is 9781657382579811119
• The square root of 2138639 is 1462.4086296245
• The cube root of 2138639 is 128.8385496983

Scales and comparisons

• 2,138,639 seconds is equal to 3 weeks, 3 days, 18 hours, 3 minutes, 59 seconds.
• To count from 1 to 2,138,639 would take you about five 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 2138639 cubic inches would be around 10.7 feet tall.

Recreational maths with 2138639

• 2138639 backwards is 9368312
• The number of decimal digits it has is: 7
• The sum of 2138639's digits is 32
• More coming soon!