28321890

Names of 28321890

• Cardinal: 28321890 can be written as Twenty-eight million, three hundred twenty-one thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.832189 × 10⁷

Factors of 28321890

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 2914

Divisors of 28321890

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 5 6 10 15 30 373 746 1119 1865 2238 2531 3730 5062 5595 7593 11190 12655 15186 25310 37965 75930 944063 1888126 2832189 4720315 5664378 9440630 14160945 28321890
• Sum of all divisors σ(n): 68181696
• Sum of proper divisors (its aliquot sum) s(n): 39859806
• 28321890 is an abundant number, because the sum of its proper divisors (39859806) is greater than itself. Its abundance is 11537916

Bases of 28321890

• Binary: 1101100000010100001100010₂
• Hexadecimal: 0x1B02862
• Base-36: GV1B6

Squares and roots of 28321890

• 28321890 squared (28321890²) is 802129453172100
• 28321890 cubed (28321890³) is 22717822138500367269000
• The square root of 28321890 is 5321.8314516717
• The cube root of 28321890 is 304.8180945231

Scales and comparisons

• 28,321,890 seconds is equal to 46 weeks, 5 days, 19 hours, 11 minutes, 30 seconds.
• To count from 1 to 28,321,890 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 28321890 cubic inches would be around 25.4 feet tall.

Recreational maths with 28321890

• 28321890 backwards is 09812382
• The number of decimal digits it has is: 8
• The sum of 28321890's digits is 33
• More coming soon!