18730021392

Names of 18730021392

• Cardinal: 18730021392 can be written as Eighteen billion, seven hundred thirty million, twenty-one thousand, three hundred ninety-two.

Scientific notation

• Scientific notation: 1.8730021392 × 10¹⁰

Factors of 18730021392

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 14452182

Divisors of 18730021392

• Number of divisors d(n): 50
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 324 432 648 1296 14452177 28904354 43356531 57808708 86713062 115617416 130069593 173426124 231234832 260139186 346852248 390208779 520278372 693704496 780417558 1040556744 1170626337 1560835116 2081113488 2341252674 3121670232 4682505348 6243340464 9365010696 18730021392
• Sum of all divisors σ(n): 54210119678
• Sum of proper divisors (its aliquot sum) s(n): 35480098286
• 18730021392 is an abundant number, because the sum of its proper divisors (35480098286) is greater than itself. Its abundance is 16750076894

Bases of 18730021392

• Binary: 10001011100011001010111001000010000₂
• Hexadecimal: 0x45C657210
• Base-36: 8LRDD00

Squares and roots of 18730021392

• 18730021392 squared (18730021392²) is 350813701344777617664
• 18730021392 cubed (18730021392³) is 6570748130794383946329517068288
• The square root of 18730021392 is 136857.6683711949
• The cube root of 18730021392 is 2655.7025125571

Scales and comparisons

• 18,730,021,392 seconds is equal to 595 years, 28 weeks, 6 days, 15 hours, 43 minutes, 12 seconds.
• To count from 1 to 18,730,021,392 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 18730021392 cubic inches would be around 221.3 feet tall.

Recreational maths with 18730021392

• 18730021392 backwards is 29312003781
• 18730021392 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18730021392's digits is 36
• More coming soon!