1218028772

Names of 1218028772

• Cardinal: 1218028772 can be written as One billion, two hundred eighteen million, twenty-eight thousand, seven hundred seventy-two.

Scientific notation

• Scientific notation: 1.218028772 × 10⁹

Factors of 1218028772

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 1132268

Divisors of 1218028772

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 4 269 538 1076 1131997 2263994 4527988 304507193 609014386 1218028772
• Sum of all divisors σ(n): 2139476220
• Sum of proper divisors (its aliquot sum) s(n): 921447448
• 1218028772 is a deficient number, because the sum of its proper divisors (921447448) is less than itself. Its deficiency is 296581324

Bases of 1218028772

• Binary: 1001000100110011010010011100100₂
• Hexadecimal: 0x4899A4E4
• Base-36: K56L0K

Squares and roots of 1218028772

• 1218028772 squared (1218028772²) is 1483594089419827984
• 1218028772 cubed (1218028772³) is 1807060286882491271802755648
• The square root of 1218028772 is 34900.2689387919
• The cube root of 1218028772 is 1067.9539238165

Scales and comparisons

• 1,218,028,772 seconds is equal to 38 years, 37 weeks, 6 days, 13 hours, 19 minutes, 32 seconds.
• To count from 1 to 1,218,028,772 would take you about seventy-seven 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 1218028772 cubic inches would be around 89 feet tall.

Recreational maths with 1218028772

• 1218028772 backwards is 2778208121
• The number of decimal digits it has is: 10
• The sum of 1218028772's digits is 38
• More coming soon!