18305820

Names of 18305820

• Cardinal: 18305820 can be written as Eighteen million, three hundred five thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 1.830582 × 10⁷

Factors of 18305820

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7846

Divisors of 18305820

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 45 52 60 65 78 90 117 130 156 180 195 234 260 390 468 585 780 1170 2340 7823 15646 23469 31292 39115 46938 70407 78230 93876 101699 117345 140814 156460 203398 234690 281628 305097 352035 406796 469380 508495 610194 704070 915291 1016990 1220388 1408140 1525485 1830582 2033980 3050970 3661164 4576455 6101940 9152910 18305820
• Sum of all divisors σ(n): 59806656
• Sum of proper divisors (its aliquot sum) s(n): 41500836
• 18305820 is an abundant number, because the sum of its proper divisors (41500836) is greater than itself. Its abundance is 23195016

Bases of 18305820

• Binary: 1000101110101001100011100₂
• Hexadecimal: 0x117531C
• Base-36: AWCV0

Squares and roots of 18305820

• 18305820 squared (18305820²) is 335103045872400
• 18305820 cubed (18305820³) is 6134336039191897368000
• The square root of 18305820 is 4278.5301214319
• The cube root of 18305820 is 263.5500254883

Scales and comparisons

• 18,305,820 seconds is equal to 30 weeks, 1 day, 20 hours, 57 minutes.
• To count from 1 to 18,305,820 would take you about forty-five 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 18305820 cubic inches would be around 22 feet tall.

Recreational maths with 18305820

• 18305820 backwards is 02850381
• The number of decimal digits it has is: 8
• The sum of 18305820's digits is 27
• More coming soon!