18112990

Names of 18112990

• Cardinal: 18112990 can be written as Eighteen million, one hundred twelve thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.811299 × 10⁷

Factors of 18112990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 553

Divisors of 18112990

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 7 10 14 17 31 34 35 62 70 85 119 155 170 217 238 310 434 491 527 595 982 1054 1085 1190 2170 2455 2635 3437 3689 4910 5270 6874 7378 8347 15221 16694 17185 18445 30442 34370 36890 41735 58429 76105 83470 106547 116858 152210 213094 258757 292145 517514 532735 584290 1065470 1293785 1811299 2587570 3622598 9056495 18112990
• Sum of all divisors σ(n): 40808448
• Sum of proper divisors (its aliquot sum) s(n): 22695458
• 18112990 is an abundant number, because the sum of its proper divisors (22695458) is greater than itself. Its abundance is 4582468

Bases of 18112990

• Binary: 1000101000110000111011110₂
• Hexadecimal: 0x11461DE
• Base-36: AS82M

Squares and roots of 18112990

• 18112990 squared (18112990²) is 328080406740100
• 18112990 cubed (18112990³) is 5942517126479363899000
• The square root of 18112990 is 4255.9358547797
• The cube root of 18112990 is 262.6213618715

Scales and comparisons

• 18,112,990 seconds is equal to 29 weeks, 6 days, 15 hours, 23 minutes, 10 seconds.
• To count from 1 to 18,112,990 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 18112990 cubic inches would be around 21.9 feet tall.

Recreational maths with 18112990

• 18112990 backwards is 09921181
• 18112990 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18112990's digits is 31
• More coming soon!