20839791728

Names of 20839791728

• Cardinal: 20839791728 can be written as Twenty billion, eight hundred thirty-nine million, seven hundred ninety-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.0839791728 × 10¹⁰

Factors of 20839791728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 7294

Divisors of 20839791728

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 7 8 14 16 28 47 49 56 79 94 98 112 158 188 196 316 329 376 392 553 632 658 752 784 1106 1264 1316 2212 2303 2632 3713 3871 4424 4606 5264 7159 7426 7742 8848 9212 14318 14852 15484 18424 25991 28636 29704 30968 36848 50113 51982 57272 59408 61936 100226 103964 114544 181937 200452 207928 336473 350791 363874 400904 415856 565561 672946 701582 727748 801808 1131122 1345892 1403164 1455496 2262244 2355311 2691784 2806328 2910992 3958927 4524488 4710622 5383568 5612656 7917854 9048976 9421244 15835708 16487177 18842488 26581367 27712489 31671416 32974354 37684976 53162734 55424978 63342832 65948708 106325468 110849956 131897416 186069569 212650936 221699912 263794832 372139138 425301872 443399824 744278276 1302486983 1488556552 2604973966 2977113104 5209947932 10419895864 20839791728
• Sum of all divisors σ(n): 48582604800
• Sum of proper divisors (its aliquot sum) s(n): 27742813072
• 20839791728 is an abundant number, because the sum of its proper divisors (27742813072) is greater than itself. Its abundance is 6903021344

Bases of 20839791728

• Binary: 10011011010001001011111110001110000₂
• Hexadecimal: 0x4DA25FC70
• Base-36: 9KNH27K

Squares and roots of 20839791728

• 20839791728 squared (20839791728²) is 434296919266417225984
• 20839791728 cubed (20839791728³) is 9050657345624165534258069860352
• The square root of 20839791728 is 144359.9380991829
• The cube root of 20839791728 is 2751.8903466935

Scales and comparisons

• 20,839,791,728 seconds is equal to 662 years, 33 weeks, 2 days, 7 hours, 2 minutes, 8 seconds.
• To count from 1 to 20,839,791,728 would take you about one thousand, three hundred twenty-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 20839791728 cubic inches would be around 229.3 feet tall.

Recreational maths with 20839791728

• 20839791728 backwards is 82719793802
• 20839791728 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20839791728's digits is 56
• More coming soon!