28393040

Names of 28393040

• Cardinal: 28393040 can be written as Twenty-eight million, three hundred ninety-three thousand and forty.

Scientific notation

• Scientific notation: 2.839304 × 10⁷

Factors of 28393040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1230

Divisors of 28393040

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 23 26 40 46 52 65 80 92 104 115 130 184 208 230 260 299 368 460 520 598 920 1040 1187 1196 1495 1840 2374 2392 2990 4748 4784 5935 5980 9496 11870 11960 15431 18992 23740 23920 27301 30862 47480 54602 61724 77155 94960 109204 123448 136505 154310 218408 246896 273010 308620 354913 436816 546020 617240 709826 1092040 1234480 1419652 1774565 2184080 2839304 3549130 5678608 7098260 14196520 28393040
• Sum of all divisors σ(n): 74245248
• Sum of proper divisors (its aliquot sum) s(n): 45852208
• 28393040 is an abundant number, because the sum of its proper divisors (45852208) is greater than itself. Its abundance is 17459168

Bases of 28393040

• Binary: 1101100010011111001010000₂
• Hexadecimal: 0x1B13E50
• Base-36: GWK7K

Squares and roots of 28393040

• 28393040 squared (28393040²) is 806164720441600
• 28393040 cubed (28393040³) is 22889467154087166464000
• The square root of 28393040 is 5328.5119874127
• The cube root of 28393040 is 305.0731348403

Scales and comparisons

• 28,393,040 seconds is equal to 46 weeks, 6 days, 14 hours, 57 minutes, 20 seconds.
• To count from 1 to 28,393,040 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 28393040 cubic inches would be around 25.4 feet tall.

Recreational maths with 28393040

• 28393040 backwards is 04039382
• The number of decimal digits it has is: 8
• The sum of 28393040's digits is 29
• More coming soon!