18139485

Names of 18139485

• Cardinal: 18139485 can be written as Eighteen million, one hundred thirty-nine thousand, four hundred eighty-five.

Scientific notation

• Scientific notation: 1.8139485 × 10⁷

Factors of 18139485

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 262

Divisors of 18139485

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 7 13 15 21 35 39 65 91 97 105 137 195 273 291 411 455 485 679 685 959 1261 1365 1455 1781 2037 2055 2877 3395 3783 4795 5343 6305 8827 8905 10185 12467 13289 14385 18915 26481 26715 37401 39867 44135 62335 66445 93023 132405 172757 187005 199335 279069 465115 518271 863785 1209299 1395345 2591355 3627897 6046495 18139485
• Sum of all divisors σ(n): 36352512
• Sum of proper divisors (its aliquot sum) s(n): 18213027
• 18139485 is an abundant number, because the sum of its proper divisors (18213027) is greater than itself. Its abundance is 73542

Bases of 18139485

• Binary: 1000101001100100101011101₂
• Hexadecimal: 0x114C95D
• Base-36: ASSIL

Squares and roots of 18139485

• 18139485 squared (18139485²) is 329040916065225
• 18139485 cubed (18139485³) is 5968632761351407909125
• The square root of 18139485 is 4259.0474287099
• The cube root of 18139485 is 262.7493503671

Scales and comparisons

• 18,139,485 seconds is equal to 29 weeks, 6 days, 22 hours, 44 minutes, 45 seconds.
• To count from 1 to 18,139,485 would take you about forty-four 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 18139485 cubic inches would be around 21.9 feet tall.

Recreational maths with 18139485

• 18139485 backwards is 58493181
• 18139485 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18139485's digits is 39
• More coming soon!