40028749

Names of 40028749

• Cardinal: 40028749 can be written as Forty million, twenty-eight thousand, seven hundred forty-nine.

Scientific notation

• Scientific notation: 4.0028749 × 10⁷

Factors of 40028749

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 5355

Divisors of 40028749

• Number of divisors d(n): 8
• Complete list of divisors:
  1 61 127 5167 7747 315187 656209 40028749
• Sum of all divisors σ(n): 41013248
• Sum of proper divisors (its aliquot sum) s(n): 984499
• 40028749 is a deficient number, because the sum of its proper divisors (984499) is less than itself. Its deficiency is 39044250

Bases of 40028749

• Binary: 10011000101100101001001101₂
• Hexadecimal: 0x262CA4D
• Base-36: NTYDP

Squares and roots of 40028749

• 40028749 squared (40028749²) is 1602300746505001
• 40028749 cubed (40028749³) is 64138094404361312273749
• The square root of 40028749 is 6326.8277201137
• The cube root of 40028749 is 342.0771032115

Scales and comparisons

• 40,028,749 seconds is equal to 1 year, 14 weeks, 1 day, 7 hours, 5 minutes, 49 seconds.
• To count from 1 to 40,028,749 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 40028749 cubic inches would be around 28.5 feet tall.

Recreational maths with 40028749

• 40028749 backwards is 94782004
• The number of decimal digits it has is: 8
• The sum of 40028749's digits is 34
• More coming soon!