40123690

Names of 40123690

• Cardinal: 40123690 can be written as Forty million, one hundred twenty-three thousand, six hundred ninety.

Scientific notation

• Scientific notation: 4.012369 × 10⁷

Factors of 40123690

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4012376

Divisors of 40123690

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 4012369 8024738 20061845 40123690
• Sum of all divisors σ(n): 72222660
• Sum of proper divisors (its aliquot sum) s(n): 32098970
• 40123690 is a deficient number, because the sum of its proper divisors (32098970) is less than itself. Its deficiency is 8024720

Bases of 40123690

• Binary: 10011001000011110100101010₂
• Hexadecimal: 0x2643D2A
• Base-36: NVZMY

Squares and roots of 40123690

• 40123690 squared (40123690²) is 1609910499216100
• 40123690 cubed (40123690³) is 64595549798292039409000
• The square root of 40123690 is 6334.3263256641
• The cube root of 40123690 is 342.3473381483

Scales and comparisons

• 40,123,690 seconds is equal to 1 year, 14 weeks, 2 days, 9 hours, 28 minutes, 10 seconds.
• To count from 1 to 40,123,690 would take you about forty-seven 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 40123690 cubic inches would be around 28.5 feet tall.

Recreational maths with 40123690

• 40123690 backwards is 09632104
• The number of decimal digits it has is: 8
• The sum of 40123690's digits is 25
• More coming soon!