643138

Names of 643138

• Cardinal: 643138 can be written as Six hundred forty-three thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 6.43138 × 10⁵

Factors of 643138

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 321571

Divisors of 643138

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 321569 643138
• Sum of all divisors σ(n): 964710
• Sum of proper divisors (its aliquot sum) s(n): 321572
• 643138 is a deficient number, because the sum of its proper divisors (321572) is less than itself. Its deficiency is 321566

Bases of 643138

• Binary: 10011101000001000010₂
• Hexadecimal: 0x9D042
• Base-36: DS8Y

Squares and roots of 643138

• 643138 squared (643138²) is 413626487044
• 643138 cubed (643138³) is 266018911624504072
• The square root of 643138 is 801.9588518123
• The cube root of 643138 is 86.3180041987

Scales and comparisons

• 643,138 seconds is equal to 1 week, 10 hours, 38 minutes, 58 seconds.
• To count from 1 to 643,138 would take you about ten hours!

  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 643138 cubic inches would be around 7.2 feet tall.

Recreational maths with 643138

• 643138 backwards is 831346
• The number of decimal digits it has is: 6
• The sum of 643138's digits is 25
• More coming soon!