18038155

Names of 18038155

• Cardinal: 18038155 can be written as Eighteen million, thirty-eight thousand, one hundred fifty-five.

Scientific notation

• Scientific notation: 1.8038155 × 10⁷

Factors of 18038155

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 88037

Divisors of 18038155

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 41 205 87991 439955 3607631 18038155
• Sum of all divisors σ(n): 22173984
• Sum of proper divisors (its aliquot sum) s(n): 4135829
• 18038155 is a deficient number, because the sum of its proper divisors (4135829) is less than itself. Its deficiency is 13902326

Bases of 18038155

• Binary: 1000100110011110110001011₂
• Hexadecimal: 0x1133D8B
• Base-36: AQMBV

Squares and roots of 18038155

• 18038155 squared (18038155²) is 325375035804025
• 18038155 cubed (18038155³) is 5869165328963552573875
• The square root of 18038155 is 4247.1349166233
• The cube root of 18038155 is 262.2591835275

Scales and comparisons

• 18,038,155 seconds is equal to 29 weeks, 5 days, 18 hours, 35 minutes, 55 seconds.
• To count from 1 to 18,038,155 would take you about forty-four 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 18038155 cubic inches would be around 21.9 feet tall.

Recreational maths with 18038155

• 18038155 backwards is 55183081
• The number of decimal digits it has is: 8
• The sum of 18038155's digits is 31
• More coming soon!