328972220721

Names of 328972220721

• Cardinal: 328972220721 can be written as Three hundred twenty-eight billion, nine hundred seventy-two million, two hundred twenty thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 3.28972220721 × 10¹¹

Factors of 328972220721

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 173

Divisors of 328972220721

• Number of divisors d(n): 81
• Complete list of divisors:
  1 3 9 27 73 81 97 219 243 291 657 729 873 1971 2187 2619 5329 5913 6561 7081 7857 9409 15987 17739 21243 23571 28227 47961 53217 63729 70713 84681 143883 159651 191187 212139 254043 431649 478953 516913 573561 636417 686857 762129 1294947 1550739 1720683 2060571 2286387 3884841 4652217 5162049 6181713 6859161 11654523 13956651 15486147 18545139 20577483 34963569 41869953 46458441 50140561 55635417 61732449 125609859 150421683 166906251 376829577 451265049 500718753 1130488731 1353795147 1502156259 3391466193 4061385441 4506468777 12184156323 36552468969 109657406907 328972220721
• Sum of all divisors σ(n): 505495964961
• Sum of proper divisors (its aliquot sum) s(n): 176523744240
• 328972220721 is a deficient number, because the sum of its proper divisors (176523744240) is less than itself. Its deficiency is 152448476481

Bases of 328972220721

• Binary: 100110010011000010001011011100100110001₂
• Hexadecimal: 0x4C9845B931
• Base-36: 474LKE29

Squares and roots of 328972220721

• 328972220721 squared (328972220721²) is 108222722006106341759841
• 328972220721 cubed (328972220721³) is 35602269190820239371216273025865361
• 328972220721 is a perfect square number. Its square root is 573561
• The cube root of 328972220721 is 6903.2416380791

Scales and comparisons

• 328,972,220,721 seconds is equal to 10,460 years, 15 weeks, 3 days, 20 hours, 25 minutes, 21 seconds.
• To count from 1 to 328,972,220,721 would take you about twenty thousand, nine hundred twenty 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 328972220721 cubic inches would be around 575.3 feet tall.

Recreational maths with 328972220721

• 328972220721 backwards is 127022279823
• The number of decimal digits it has is: 12
• The sum of 328972220721's digits is 45
• More coming soon!