18221440128

Names of 18221440128

• Cardinal: 18221440128 can be written as Eighteen billion, two hundred twenty-one million, four hundred forty thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8221440128 × 10¹⁰

Factors of 18221440128

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 106137

Divisors of 18221440128

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 384 449 898 1347 1796 2694 3592 5388 7184 10776 14368 21552 28736 43104 57472 86208 105683 172416 211366 317049 422732 634098 845464 1268196 1690928 2536392 3381856 5072784 6763712 10145568 13527424 20291136 40582272 47451667 94903334 142355001 189806668 284710002 379613336 569420004 759226672 1138840008 1518453344 2277680016 3036906688 4555360032 6073813376 9110720064 18221440128
• Sum of all divisors σ(n): 48508956000
• Sum of proper divisors (its aliquot sum) s(n): 30287515872
• 18221440128 is an abundant number, because the sum of its proper divisors (30287515872) is greater than itself. Its abundance is 12066075744

Bases of 18221440128

• Binary: 10000111110000101010001110010000000₂
• Hexadecimal: 0x43E151C80
• Base-36: 8DCKP6O

Squares and roots of 18221440128

• 18221440128 squared (18221440128²) is 332020880338288656384
• 18221440128 cubed (18221440128³) is 6049898592329979138282620977152
• The square root of 18221440128 is 134986.8146449867
• The cube root of 18221440128 is 2631.4446095491

Scales and comparisons

• 18,221,440,128 seconds is equal to 579 years, 20 weeks, 7 hours, 8 minutes, 48 seconds.
• To count from 1 to 18,221,440,128 would take you about one thousand, one hundred fifty-eight 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 18221440128 cubic inches would be around 219.3 feet tall.

Recreational maths with 18221440128

• 18221440128 backwards is 82104412281
• The number of decimal digits it has is: 11
• The sum of 18221440128's digits is 33
• More coming soon!