813894816

Names of 813894816

• Cardinal: 813894816 can be written as Eight hundred thirteen million, eight hundred ninety-four thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 8.13894816 × 10⁸

Factors of 813894816

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2478

Divisors of 813894816

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 112 168 224 336 672 677 1354 1789 2031 2708 3578 4062 4739 5367 5416 7156 8124 9478 10734 10832 12523 14217 14312 16248 18956 21468 21664 25046 28434 28624 32496 37569 37912 42936 50092 56868 57248 64992 75138 75824 85872 100184 113736 150276 151648 171744 200368 227472 300552 400736 454944 601104 1202208 1211153 2422306 3633459 4844612 7266918 8478071 9689224 14533836 16956142 19378448 25434213 29067672 33912284 38756896 50868426 58135344 67824568 101736852 116270688 135649136 203473704 271298272 406947408 813894816
• Sum of all divisors σ(n): 2446657920
• Sum of proper divisors (its aliquot sum) s(n): 1632763104
• 813894816 is an abundant number, because the sum of its proper divisors (1632763104) is greater than itself. Its abundance is 818868288

Bases of 813894816

• Binary: 110000100000110000110010100000₂
• Hexadecimal: 0x30830CA0
• Base-36: DGKL9C

Squares and roots of 813894816

• 813894816 squared (813894816²) is 662424771511673856
• 813894816 cubed (813894816³) is 539144087523335834881130496
• The square root of 813894816 is 28528.8418271755
• The cube root of 813894816 is 933.6614497153

Scales and comparisons

• 813,894,816 seconds is equal to 25 years, 45 weeks, 5 days, 1 hour, 53 minutes, 36 seconds.
• To count from 1 to 813,894,816 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 813894816 cubic inches would be around 77.8 feet tall.

Recreational maths with 813894816

• 813894816 backwards is 618498318
• 813894816 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 813894816's digits is 48
• More coming soon!