820397704919834889

Names of 820397704919834889

• Cardinal: 820397704919834889 can be written as Eight hundred twenty quadrillion, three hundred ninety-seven trillion, seven hundred four billion, nine hundred nineteen million, eight hundred thirty-four thousand, eight hundred eighty-nine.

Scientific notation

• Scientific notation: 8.20397704919834889 × 10¹⁷

Factors of 820397704919834889

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 168615

Divisors of 820397704919834889

• Number of divisors d(n): 45
• Complete list of divisors:
  1 3 9 27 81 599 1797 5391 16173 48519 168013 358801 504039 1076403 1512117 3229209 4536351 9687627 13609053 29062881 100639787 301919361 905758083 2717274249 8151822747 28228368169 60283232413 84685104507 180849697239 254055313521 542549091717 762165940563 1627647275151 2286497821689 4882941825453 16908792533231 50726377599693 152179132799079 456537398397237 1369612195191711 10128366727405369 30385100182216107 91155300546648321 273465901639944963 820397704919834889
• Sum of all divisors σ(n): 1227589060057472343
• Sum of proper divisors (its aliquot sum) s(n): 407191355137637454
• 820397704919834889 is a deficient number, because the sum of its proper divisors (407191355137637454) is less than itself. Its deficiency is 413206349782197435

Bases of 820397704919834889

• Binary: 101101100010101000110101110110110000010010101110000100001001₂
• Hexadecimal: 0xB62A35DB04AE109
• Base-36: 68DYPQOC8JK9

Squares and roots of 820397704919834889

• 820397704919834889 squared (820397704919834889²) is 673052394237732478835485935021642321
• 820397704919834889 cubed (820397704919834889³) is 552170639523435630147710149097382604759324560934737369
• 820397704919834889 is a perfect square number. Its square root is 905758083
• The cube root of 820397704919834889 is 936141.4581384487

Scales and comparisons

• 820,397,704,919,834,889 seconds is equal to 26,086,109,359 years, 38 weeks, 12 hours, 48 minutes, 9 seconds.
• To count from 1 to 820,397,704,919,834,889 would take you about seventy-eight billion, two hundred fifty-eight million, three hundred twenty-eight thousand and seventy-nine 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 820397704919834889 cubic inches would be around 78011.8 feet tall.

Recreational maths with 820397704919834889

• 820397704919834889 backwards is 988438919407793028
• The number of decimal digits it has is: 18
• The sum of 820397704919834889's digits is 99
• More coming soon!