18449396720

Names of 18449396720

• Cardinal: 18449396720 can be written as Eighteen billion, four hundred forty-nine million, three hundred ninety-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.844939672 × 10¹⁰

Factors of 18449396720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 61836

Divisors of 18449396720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 38 40 76 80 95 152 190 197 304 380 394 760 788 985 1520 1576 1970 3152 3743 3940 7486 7880 14972 15760 18715 29944 37430 59888 61613 74860 123226 149720 246452 299440 308065 492904 616130 985808 1170647 1232260 2341294 2464520 4682588 4929040 5853235 9365176 11706470 12137761 18730352 23412940 24275522 46825880 48551044 60688805 93651760 97102088 121377610 194204176 230617459 242755220 461234918 485510440 922469836 971020880 1153087295 1844939672 2306174590 3689879344 4612349180 9224698360 18449396720
• Sum of all divisors σ(n): 45382407840
• Sum of proper divisors (its aliquot sum) s(n): 26933011120
• 18449396720 is an abundant number, because the sum of its proper divisors (26933011120) is greater than itself. Its abundance is 8483614400

Bases of 18449396720

• Binary: 10001001011101010110111001111110000₂
• Hexadecimal: 0x44BAB73F0
• Base-36: 8H4ALM8

Squares and roots of 18449396720

• 18449396720 squared (18449396720²) is 340380239331946758400
• 18449396720 cubed (18449396720³) is 6279810071083633515639592448000
• The square root of 18449396720 is 135828.5563495393
• The cube root of 18449396720 is 2642.3725954291

Scales and comparisons

• 18,449,396,720 seconds is equal to 586 years, 32 weeks, 6 days, 16 hours, 25 minutes, 20 seconds.
• To count from 1 to 18,449,396,720 would take you about one thousand, one hundred seventy-three 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 18449396720 cubic inches would be around 220.2 feet tall.

Recreational maths with 18449396720

• 18449396720 backwards is 02769394481
• The number of decimal digits it has is: 11
• The sum of 18449396720's digits is 53
• More coming soon!