18214638

Names of 18214638

• Cardinal: 18214638 can be written as Eighteen million, two hundred fourteen thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8214638 × 10⁷

Factors of 18214638

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1108

Divisors of 18214638

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 13 26 39 78 293 586 797 879 1594 1758 2391 3809 4782 7618 10361 11427 20722 22854 31083 62166 233521 467042 700563 1401126 3035773 6071546 9107319 18214638
• Sum of all divisors σ(n): 39414816
• Sum of proper divisors (its aliquot sum) s(n): 21200178
• 18214638 is an abundant number, because the sum of its proper divisors (21200178) is greater than itself. Its abundance is 2985540

Bases of 18214638

• Binary: 1000101011110111011101110₂
• Hexadecimal: 0x115EEEE
• Base-36: AUEI6

Squares and roots of 18214638

• 18214638 squared (18214638²) is 331773037471044
• 18214638 cubed (18214638³) is 6043125775695501942072
• The square root of 18214638 is 4267.8610567825
• The cube root of 18214638 is 263.1117126269

Scales and comparisons

• 18,214,638 seconds is equal to 30 weeks, 19 hours, 37 minutes, 18 seconds.
• To count from 1 to 18,214,638 would take you about forty-five 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 18214638 cubic inches would be around 21.9 feet tall.

Recreational maths with 18214638

• 18214638 backwards is 83641281
• The number of decimal digits it has is: 8
• The sum of 18214638's digits is 33
• More coming soon!