18083940

Names of 18083940

• Cardinal: 18083940 can be written as Eighteen million, eighty-three thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.808394 × 10⁷

Factors of 18083940

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 6168

Divisors of 18083940

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 6151 12302 18453 24604 30755 36906 43057 61510 73812 86114 92265 123020 129171 172228 184530 215285 258342 301399 369060 430570 516684 602798 645855 861140 904197 1205596 1291710 1506995 1808394 2583420 3013990 3616788 4520985 6027980 9041970 18083940
• Sum of all divisors σ(n): 58911552
• Sum of proper divisors (its aliquot sum) s(n): 40827612
• 18083940 is an abundant number, because the sum of its proper divisors (40827612) is greater than itself. Its abundance is 22743672

Bases of 18083940

• Binary: 1000100111111000001100100₂
• Hexadecimal: 0x113F064
• Base-36: ARLNO

Squares and roots of 18083940

• 18083940 squared (18083940²) is 327028885923600
• 18083940 cubed (18083940³) is 5913970751309226984000
• The square root of 18083940 is 4252.5216048833
• The cube root of 18083940 is 262.4808874973

Scales and comparisons

• 18,083,940 seconds is equal to 29 weeks, 6 days, 7 hours, 19 minutes.
• To count from 1 to 18,083,940 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 18083940 cubic inches would be around 21.9 feet tall.

Recreational maths with 18083940

• 18083940 backwards is 04938081
• The number of decimal digits it has is: 8
• The sum of 18083940's digits is 33
• More coming soon!