428287645282721

Names of 428287645282721

• Cardinal: 428287645282721 can be written as Four hundred twenty-eight trillion, two hundred eighty-seven billion, six hundred forty-five million, two hundred eighty-two thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 4.28287645282721 × 10¹⁴

Factors of 428287645282721

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 10922853

Divisors of 428287645282721

• Number of divisors d(n): 32
• Complete list of divisors:
  1 7 31 61 217 427 1891 2963 13237 20741 91853 180743 642971 1265201 5603033 10919791 39221231 76438537 338513521 666107251 2369594647 4662750757 20649324781 32355340733 144545273467 226487385131 1003015562723 1973675784713 7021108939061 13815730492991 61183949326103 428287645282721
• Sum of all divisors σ(n): 513717334081536
• Sum of proper divisors (its aliquot sum) s(n): 85429688798815
• 428287645282721 is a deficient number, because the sum of its proper divisors (85429688798815) is less than itself. Its deficiency is 342857956483906

Bases of 428287645282721

• Binary: 1100001011000011001111100111101010111000110100001₂
• Hexadecimal: 0x185867CF571A1
• Base-36: 47TCMLXWV5

Squares and roots of 428287645282721

• 428287645282721 squared (428287645282721²) is 183430307101817847644021163841
• 428287645282721 cubed (428287645282721³) is 78560934302123941040559666295386351907291361
• The square root of 428287645282721 is 20695111.6276941353
• The cube root of 428287645282721 is 75378.0992852949

Scales and comparisons

• 428,287,645,282,721 seconds is equal to 13,618,222 years, 17 weeks, 4 days, 12 hours, 18 minutes, 41 seconds.
• To count from 1 to 428,287,645,282,721 would take you about thirty-four million, forty-five thousand, five hundred fifty-five 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 428287645282721 cubic inches would be around 6281.5 feet tall.

Recreational maths with 428287645282721

• 428287645282721 backwards is 127282546782824
• The number of decimal digits it has is: 15
• The sum of 428287645282721's digits is 68
• More coming soon!