138568321

Names of 138568321

• Cardinal: 138568321 can be written as One hundred thirty-eight million, five hundred sixty-eight thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 1.38568321 × 10⁸

Factors of 138568321

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 8679

Divisors of 138568321

• Number of divisors d(n): 8
• Complete list of divisors:
  1 109 151 8419 16459 917671 1271269 138568321
• Sum of all divisors σ(n): 140782400
• Sum of proper divisors (its aliquot sum) s(n): 2214079
• 138568321 is a deficient number, because the sum of its proper divisors (2214079) is less than itself. Its deficiency is 136354242

Bases of 138568321

• Binary: 1000010000100110001010000001₂
• Hexadecimal: 0x8426281
• Base-36: 2AI001

Squares and roots of 138568321

• 138568321 squared (138568321²) is 19201179584759041
• 138568321 cubed (138568321³) is 2660675216279537500940161
• The square root of 138568321 is 11771.5046192065
• The cube root of 138568321 is 517.4733458075

Scales and comparisons

• 138,568,321 seconds is equal to 4 years, 21 weeks, 19 hours, 12 minutes, 1 second.
• To count from 1 to 138,568,321 would take you about six 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 138568321 cubic inches would be around 43.1 feet tall.

Recreational maths with 138568321

• 138568321 backwards is 123865831
• The number of decimal digits it has is: 9
• The sum of 138568321's digits is 37
• More coming soon!