8221611138

Names of 8221611138

• Cardinal: 8221611138 can be written as Eight billion, two hundred twenty-one million, six hundred eleven thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 8.221611138 × 10⁹

Factors of 8221611138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2871

Divisors of 8221611138

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 13 26 39 67 78 134 201 402 787 871 1574 1742 1999 2361 2613 3998 4722 5226 5997 10231 11994 20462 25987 30693 51974 52729 61386 77961 105458 133933 155922 158187 267866 316374 401799 685477 803598 1370954 1573213 1741129 2056431 3146426 3482258 4112862 4719639 5223387 9439278 10446774 20451769 40903538 61355307 105405271 122710614 210810542 316215813 632431626 1370268523 2740537046 4110805569 8221611138
• Sum of all divisors σ(n): 18004224000
• Sum of proper divisors (its aliquot sum) s(n): 9782612862
• 8221611138 is an abundant number, because the sum of its proper divisors (9782612862) is greater than itself. Its abundance is 1561001724

Bases of 8221611138

• Binary: 111101010000010111101010010000010₂
• Hexadecimal: 0x1EA0BD482
• Base-36: 3RYXNR6

Squares and roots of 8221611138

• 8221611138 squared (8221611138²) is 67594889704485655044
• 8221611138 cubed (8221611138³) is 555738898066280790070976280072
• The square root of 8221611138 is 90673.1004102099
• The cube root of 8221611138 is 2018.2996456405

Scales and comparisons

• 8,221,611,138 seconds is equal to 261 years, 21 weeks, 6 days, 12 hours, 52 minutes, 18 seconds.
• To count from 1 to 8,221,611,138 would take you about five hundred twenty-two 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 8221611138 cubic inches would be around 168.2 feet tall.

Recreational maths with 8221611138

• 8221611138 backwards is 8311161228
• The number of decimal digits it has is: 10
• The sum of 8221611138's digits is 33
• More coming soon!