18868847872

Names of 18868847872

• Cardinal: 18868847872 can be written as Eighteen billion, eight hundred sixty-eight million, eight hundred forty-seven thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.8868847872 × 10¹⁰

Factors of 18868847872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 48563

Divisors of 18868847872

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 7 8 14 16 28 31 32 49 56 62 64 98 112 124 128 196 217 224 248 256 392 434 448 496 784 868 896 992 1519 1568 1736 1792 1984 3038 3136 3472 3968 6076 6272 6944 7936 12152 12544 13888 24304 27776 48523 48608 55552 97046 97216 194092 194432 339661 388184 388864 679322 776368 1358644 1504213 1552736 2377627 2717288 3008426 3105472 4755254 5434576 6016852 6210944 9510508 10529491 10869152 12033704 12421888 19021016 21058982 21738304 24067408 38042032 42117964 43476608 48134816 73706437 76084064 84235928 86953216 96269632 147412874 152168128 168471856 192539264 294825748 304336256 336943712 385078528 589651496 608672512 673887424 1179302992 1347774848 2358605984 2695549696 4717211968 9434423936 18868847872
• Sum of all divisors σ(n): 45227473536
• Sum of proper divisors (its aliquot sum) s(n): 26358625664
• 18868847872 is an abundant number, because the sum of its proper divisors (26358625664) is greater than itself. Its abundance is 7489777792

Bases of 18868847872

• Binary: 10001100100101010111100010100000000₂
• Hexadecimal: 0x464ABC500
• Base-36: 8O20W74

Squares and roots of 18868847872

• 18868847872 squared (18868847872²) is 356033420016678928384
• 18868847872 cubed (18868847872³) is 6717940439642594402345678798848
• The square root of 18868847872 is 137363.9249293641
• The cube root of 18868847872 is 2662.2477031081

Scales and comparisons

• 18,868,847,872 seconds is equal to 599 years, 50 weeks, 3 days, 10 hours, 37 minutes, 52 seconds.
• To count from 1 to 18,868,847,872 would take you about one thousand, one hundred ninety-nine 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 18868847872 cubic inches would be around 221.9 feet tall.

Recreational maths with 18868847872

• 18868847872 backwards is 27874886881
• The number of decimal digits it has is: 11
• The sum of 18868847872's digits is 67
• More coming soon!