28690

Names of 28690

• Cardinal: 28690 can be written as Twenty-eight thousand, six hundred ninety.

Scientific notation

• Scientific notation: 2.869 × 10⁴

Factors of 28690

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 177

Divisors of 28690

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 5 10 19 38 95 151 190 302 755 1510 2869 5738 14345 28690
• Sum of all divisors σ(n): 54720
• Sum of proper divisors (its aliquot sum) s(n): 26030
• 28690 is a deficient number, because the sum of its proper divisors (26030) is less than itself. Its deficiency is 2660

Bases of 28690

• Binary: 111000000010010₂
• Hexadecimal: 0x7012
• Base-36: M4Y

Squares and roots of 28690

• 28690 squared (28690²) is 823116100
• 28690 cubed (28690³) is 23615200909000
• The square root of 28690 is 169.3812268229
• The cube root of 28690 is 30.6133024879

Scales and comparisons

• 28,690 seconds is equal to 7 hours, 58 minutes, 10 seconds.
• To count from 1 to 28,690 would take you about seven hours.

  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 28690 cubic inches would be around 2.6 feet tall.

Recreational maths with 28690

• 28690 backwards is 09682
• The number of decimal digits it has is: 5
• The sum of 28690's digits is 25
• More coming soon!