20870

Names of 20870

• Cardinal: 20870 can be written as Twenty thousand, eight hundred seventy.

Scientific notation

• Scientific notation: 2.087 × 10⁴

Factors of 20870

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2094

Divisors of 20870

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 2087 4174 10435 20870
• Sum of all divisors σ(n): 37584
• Sum of proper divisors (its aliquot sum) s(n): 16714
• 20870 is a deficient number, because the sum of its proper divisors (16714) is less than itself. Its deficiency is 4156

Bases of 20870

• Binary: 101000110000110₂
• Hexadecimal: 0x5186
• Base-36: G3Q

Squares and roots of 20870

• 20870 squared (20870²) is 435556900
• 20870 cubed (20870³) is 9090072503000
• The square root of 20870 is 144.4645285183
• The cube root of 20870 is 27.5321937017

Scales and comparisons

• 20,870 seconds is equal to 5 hours, 47 minutes, 50 seconds.
• To count from 1 to 20,870 would take you about five 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 20870 cubic inches would be around 2.3 feet tall.

Recreational maths with 20870

• 20870 backwards is 07802
• The number of decimal digits it has is: 5
• The sum of 20870's digits is 17
• More coming soon!