18728318144

Names of 18728318144

• Cardinal: 18728318144 can be written as Eighteen billion, seven hundred twenty-eight million, three hundred eighteen thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 1.8728318144 × 10¹⁰

Factors of 18728318144

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3183

Divisors of 18728318144

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 4 8 16 32 64 127 254 508 1016 1361 1693 2032 2722 3386 4064 5444 6772 8128 10888 13544 21776 27088 43552 54176 87104 108352 172847 215011 345694 430022 691388 860044 1382776 1720088 2304173 2765552 3440176 4608346 5531104 6880352 9216692 11062208 13760704 18433384 36866768 73733536 147467072 292629971 585259942 1170519884 2341039768 4682079536 9364159072 18728318144
• Sum of all divisors σ(n): 37506298368
• Sum of proper divisors (its aliquot sum) s(n): 18777980224
• 18728318144 is an abundant number, because the sum of its proper divisors (18777980224) is greater than itself. Its abundance is 49662080

Bases of 18728318144

• Binary: 10001011100010010110111010011000000₂
• Hexadecimal: 0x45C4B74C0
• Base-36: 8LQCURK

Squares and roots of 18728318144

• 18728318144 squared (18728318144²) is 350749900502879604736
• 18728318144 cubed (18728318144³) is 6568955725594274825624777129984
• The square root of 18728318144 is 136851.4455312767
• The cube root of 18728318144 is 2655.6220097641

Scales and comparisons

• 18,728,318,144 seconds is equal to 595 years, 26 weeks, 22 hours, 35 minutes, 44 seconds.
• To count from 1 to 18,728,318,144 would take you about one thousand, one hundred ninety-one 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 18728318144 cubic inches would be around 221.3 feet tall.

Recreational maths with 18728318144

• 18728318144 backwards is 44181382781
• The number of decimal digits it has is: 11
• The sum of 18728318144's digits is 47
• More coming soon!