72856642

Names of 72856642

• Cardinal: 72856642 can be written as Seventy-two million, eight hundred fifty-six thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 7.2856642 × 10⁷

Factors of 72856642

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1256180

Divisors of 72856642

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 29 58 1256149 2512298 36428321 72856642
• Sum of all divisors σ(n): 113053500
• Sum of proper divisors (its aliquot sum) s(n): 40196858
• 72856642 is a deficient number, because the sum of its proper divisors (40196858) is less than itself. Its deficiency is 32659784

Bases of 72856642

• Binary: 100010101111011010001000010₂
• Hexadecimal: 0x457B442
• Base-36: 17DKJM

Squares and roots of 72856642

• 72856642 squared (72856642²) is 5308090283516164
• 72856642 cubed (72856642³) is 386729633489815661761288
• The square root of 72856642 is 8535.6102300891
• The cube root of 72856642 is 417.6601596669

Scales and comparisons

• 72,856,642 seconds is equal to 2 years, 16 weeks, 3 days, 5 hours, 57 minutes, 22 seconds.
• To count from 1 to 72,856,642 would take you about three 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 72856642 cubic inches would be around 34.8 feet tall.

Recreational maths with 72856642

• 72856642 backwards is 24665827
• The number of decimal digits it has is: 8
• The sum of 72856642's digits is 40
• More coming soon!