28409690

Names of 28409690

• Cardinal: 28409690 can be written as Twenty-eight million, four hundred nine thousand, six hundred ninety.

Scientific notation

• Scientific notation: 2.840969 × 10⁷

Factors of 28409690

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 466

Divisors of 28409690

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 5 10 89 137 178 233 274 445 466 685 890 1165 1370 2330 12193 20737 24386 31921 41474 60965 63842 103685 121930 159605 207370 319210 2840969 5681938 14204845 28409690
• Sum of all divisors σ(n): 52313040
• Sum of proper divisors (its aliquot sum) s(n): 23903350
• 28409690 is a deficient number, because the sum of its proper divisors (23903350) is less than itself. Its deficiency is 4506340

Bases of 28409690

• Binary: 1101100010111111101011010₂
• Hexadecimal: 0x1B17F5A
• Base-36: GWX22

Squares and roots of 28409690

• 28409690 squared (28409690²) is 807110485896100
• 28409690 cubed (28409690³) is 22929758700057573209000
• The square root of 28409690 is 5330.0741083031
• The cube root of 28409690 is 305.1327559673

Scales and comparisons

• 28,409,690 seconds is equal to 46 weeks, 6 days, 19 hours, 34 minutes, 50 seconds.
• To count from 1 to 28,409,690 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 28409690 cubic inches would be around 25.4 feet tall.

Recreational maths with 28409690

• 28409690 backwards is 09690482
• The number of decimal digits it has is: 8
• The sum of 28409690's digits is 38
• More coming soon!