813199730

Names of 813199730

• Cardinal: 813199730 can be written as Eight hundred thirteen million, one hundred ninety-nine thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 8.1319973 × 10⁸

Factors of 813199730

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 17483

Divisors of 813199730

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 7 10 14 23 29 35 46 58 70 115 145 161 203 230 290 322 406 667 805 1015 1334 1610 2030 3335 4669 6670 9338 17417 23345 34834 46690 87085 121919 174170 243838 400591 505093 609595 801182 1010186 1219190 2002955 2525465 2804137 3535651 4005910 5050930 5608274 7071302 11617139 14020685 17678255 23234278 28041370 35356510 58085695 81319973 116171390 162639946 406599865 813199730
• Sum of all divisors σ(n): 1805898240
• Sum of proper divisors (its aliquot sum) s(n): 992698510
• 813199730 is an abundant number, because the sum of its proper divisors (992698510) is greater than itself. Its abundance is 179498780

Bases of 813199730

• Binary: 110000011110000111000101110010₂
• Hexadecimal: 0x30787172
• Base-36: DG5OXE

Squares and roots of 813199730

• 813199730 squared (813199730²) is 661293800872072900
• 813199730 cubed (813199730³) is 537763940319843446820317000
• The square root of 813199730 is 28516.6570621453
• The cube root of 813199730 is 933.3955841415

Scales and comparisons

• 813,199,730 seconds is equal to 25 years, 44 weeks, 4 days, 48 minutes, 50 seconds.
• To count from 1 to 813,199,730 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 813199730 cubic inches would be around 77.8 feet tall.

Recreational maths with 813199730

• 813199730 backwards is 037991318
• The number of decimal digits it has is: 9
• The sum of 813199730's digits is 41
• More coming soon!