813070640

Names of 813070640

• Cardinal: 813070640 can be written as Eight hundred thirteen million, seventy thousand, six hundred forty.

Scientific notation

• Scientific notation: 8.1307064 × 10⁸

Factors of 813070640

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 10163390

Divisors of 813070640

• Number of divisors d(n): 20
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 80 10163383 20326766 40653532 50816915 81307064 101633830 162614128 203267660 406535320 813070640
• Sum of all divisors σ(n): 1890389424
• Sum of proper divisors (its aliquot sum) s(n): 1077318784
• 813070640 is an abundant number, because the sum of its proper divisors (1077318784) is greater than itself. Its abundance is 264248144

Bases of 813070640

• Binary: 110000011101100111100100110000₂
• Hexadecimal: 0x30767930
• Base-36: DG2XBK

Squares and roots of 813070640

• 813070640 squared (813070640²) is 661083865630009600
• 813070640 cubed (813070640³) is 537507881721465908678144000
• The square root of 813070640 is 28514.3935583417
• The cube root of 813070640 is 933.3461914327

Scales and comparisons

• 813,070,640 seconds is equal to 25 years, 44 weeks, 2 days, 12 hours, 57 minutes, 20 seconds.
• To count from 1 to 813,070,640 would take you about thirty-eight 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 813070640 cubic inches would be around 77.8 feet tall.

Recreational maths with 813070640

• 813070640 backwards is 046070318
• The number of decimal digits it has is: 9
• The sum of 813070640's digits is 29
• More coming soon!