28406389401

Names of 28406389401

• Cardinal: 28406389401 can be written as Twenty-eight billion, four hundred six million, three hundred eighty-nine thousand, four hundred one.

Scientific notation

• Scientific notation: 2.8406389401 × 10¹⁰

Factors of 28406389401

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1924

Divisors of 28406389401

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 13 29 39 43 87 113 117 129 261 339 377 387 559 1017 1131 1247 1469 1677 1723 3277 3393 3741 4407 4859 5031 5169 9831 11223 13221 14577 15507 16211 22399 29493 42601 43731 48633 49967 63167 67197 74089 127803 140911 145899 149901 189501 194699 201591 222267 383409 422733 449703 568503 584097 649571 666801 963157 1268199 1752291 1831843 1948713 2148581 2531087 2889471 5495529 5646271 5846139 6445743 7593261 8372057 8668413 16486587 16938813 19337229 22779783 25116171 27931553 50816439 73401523 75348513 83794659 108836741 220204569 242789653 251383977 326510223 660613707 728368959 979530669 2185106877 3156265489 9468796467 28406389401
• Sum of all divisors σ(n): 47215808640
• Sum of proper divisors (its aliquot sum) s(n): 18809419239
• 28406389401 is a deficient number, because the sum of its proper divisors (18809419239) is less than itself. Its deficiency is 9596970162

Bases of 28406389401

• Binary: 11010011101001001110001101010011001₂
• Hexadecimal: 0x69D271A99
• Base-36: D1SFIC9

Squares and roots of 28406389401

• 28406389401 squared (28406389401²) is 806922958801245138801
• 28406389401 cubed (28406389401³) is 22921767784315249576439500248201
• The square root of 28406389401 is 168541.9514571965
• The cube root of 28406389401 is 3051.2093887395

Scales and comparisons

• 28,406,389,401 seconds is equal to 903 years, 12 weeks, 1 day, 15 hours, 43 minutes, 21 seconds.
• To count from 1 to 28,406,389,401 would take you about one thousand, eight hundred six 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 28406389401 cubic inches would be around 254.3 feet tall.

Recreational maths with 28406389401

• 28406389401 backwards is 10498360482
• The number of decimal digits it has is: 11
• The sum of 28406389401's digits is 45
• More coming soon!