28404402

Names of 28404402

• Cardinal: 28404402 can be written as Twenty-eight million, four hundred four thousand, four hundred two.

Scientific notation

• Scientific notation: 2.8404402 × 10⁷

Factors of 28404402

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 335

Divisors of 28404402

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 13 23 26 39 46 69 71 78 138 142 213 223 299 426 446 598 669 897 923 1338 1633 1794 1846 2769 2899 3266 4899 5129 5538 5798 8697 9798 10258 15387 15833 17394 21229 30774 31666 42458 47499 63687 66677 94998 127374 133354 200031 205829 364159 400062 411658 617487 728318 1092477 1234974 2184954 4734067 9468134 14202201 28404402
• Sum of all divisors σ(n): 65028096
• Sum of proper divisors (its aliquot sum) s(n): 36623694
• 28404402 is an abundant number, because the sum of its proper divisors (36623694) is greater than itself. Its abundance is 8219292

Bases of 28404402

• Binary: 1101100010110101010110010₂
• Hexadecimal: 0x1B16AB2
• Base-36: GWSZ6

Squares and roots of 28404402

• 28404402 squared (28404402²) is 806810052977604
• 28404402 cubed (28404402³) is 22916957082417161012808
• The square root of 28404402 is 5329.5780320773
• The cube root of 28404402 is 305.1138229655

Scales and comparisons

• 28,404,402 seconds is equal to 46 weeks, 6 days, 18 hours, 6 minutes, 42 seconds.
• To count from 1 to 28,404,402 would take you about eighteen weeks!

  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 28404402 cubic inches would be around 25.4 feet tall.

Recreational maths with 28404402

• 28404402 backwards is 20440482
• The number of decimal digits it has is: 8
• The sum of 28404402's digits is 24
• More coming soon!