20918430

Names of 20918430

• Cardinal: 20918430 can be written as Twenty million, nine hundred eighteen thousand, four hundred thirty.

Scientific notation

• Scientific notation: 2.091843 × 10⁷

Factors of 20918430

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 983

Divisors of 20918430

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 19 26 30 38 39 45 57 65 78 90 95 114 117 130 171 190 195 234 247 285 342 390 494 570 585 741 855 941 1170 1235 1482 1710 1882 2223 2470 2823 3705 4446 4705 5646 7410 8469 9410 11115 12233 14115 16938 17879 22230 24466 28230 35758 36699 42345 53637 61165 73398 84690 89395 107274 110097 122330 160911 178790 183495 220194 232427 268185 321822 366990 464854 536370 550485 697281 804555 1100970 1162135 1394562 1609110 2091843 2324270 3486405 4183686 6972810 10459215 20918430
• Sum of all divisors σ(n): 61719840
• Sum of proper divisors (its aliquot sum) s(n): 40801410
• 20918430 is an abundant number, because the sum of its proper divisors (40801410) is greater than itself. Its abundance is 19882980

Bases of 20918430

• Binary: 1001111110011000010011110₂
• Hexadecimal: 0x13F309E
• Base-36: CGCRI

Squares and roots of 20918430

• 20918430 squared (20918430²) is 437580713664900
• 20918430 cubed (20918430³) is 9153501528149254107000
• The square root of 20918430 is 4573.6670189247
• The cube root of 20918430 is 275.5347391371

Scales and comparisons

• 20,918,430 seconds is equal to 34 weeks, 4 days, 2 hours, 40 minutes, 30 seconds.
• To count from 1 to 20,918,430 would take you about fifty-one 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 20918430 cubic inches would be around 23 feet tall.

Recreational maths with 20918430

• 20918430 backwards is 03481902
• The number of decimal digits it has is: 8
• The sum of 20918430's digits is 27
• More coming soon!