18002409840

Names of 18002409840

• Cardinal: 18002409840 can be written as Eighteen billion, two million, four hundred nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.800240984 × 10¹⁰

Factors of 18002409840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 8334459

Divisors of 18002409840

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 90 108 120 135 144 180 216 240 270 360 432 540 720 1080 2160 8334449 16668898 25003347 33337796 41672245 50006694 66675592 75010041 83344490 100013388 125016735 133351184 150020082 166688980 200026776 225030123 250033470 300040164 333377960 375050205 400053552 450060246 500066940 600080328 666755920 750100410 900120492 1000133880 1125150615 1200160656 1500200820 1800240984 2000267760 2250301230 3000401640 3600481968 4500602460 6000803280 9001204920 18002409840
• Sum of all divisors σ(n): 62008308000
• Sum of proper divisors (its aliquot sum) s(n): 44005898160
• 18002409840 is an abundant number, because the sum of its proper divisors (44005898160) is greater than itself. Its abundance is 26003488320

Bases of 18002409840

• Binary: 10000110001000001101111100101110000₂
• Hexadecimal: 0x43106F970
• Base-36: 89Q64C0

Squares and roots of 18002409840

• 18002409840 squared (18002409840²) is 324086760047328825600
• 18002409840 cubed (18002409840³) is 5834342678089751315697083904000
• The square root of 18002409840 is 134173.0592928401
• The cube root of 18002409840 is 2620.8583439425

Scales and comparisons

• 18,002,409,840 seconds is equal to 572 years, 21 weeks, 6 days, 5 hours, 24 minutes.
• To count from 1 to 18,002,409,840 would take you about one thousand, one hundred forty-four 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 18002409840 cubic inches would be around 218.4 feet tall.

Recreational maths with 18002409840

• 18002409840 backwards is 04890420081
• 18002409840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18002409840's digits is 36
• More coming soon!