21671

Names of 21671

• Cardinal: 21671 can be written as Twenty-one thousand, six hundred seventy-one.

Scientific notation

• Scientific notation: 2.1671 × 10⁴

Factors of 21671

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1680

Divisors of 21671

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 1667 21671
• Sum of all divisors σ(n): 23352
• Sum of proper divisors (its aliquot sum) s(n): 1681
• 21671 is a deficient number, because the sum of its proper divisors (1681) is less than itself. Its deficiency is 19990

Bases of 21671

• Binary: 101010010100111₂
• Hexadecimal: 0x54A7
• Base-36: GPZ

Squares and roots of 21671

• 21671 squared (21671²) is 469632241
• 21671 cubed (21671³) is 10177400294711
• The square root of 21671 is 147.2107333043
• The cube root of 21671 is 27.8800137777

Scales and comparisons

• 21,671 seconds is equal to 6 hours, 1 minute, 11 seconds.
• To count from 1 to 21,671 would take you about six 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 21671 cubic inches would be around 2.3 feet tall.

Recreational maths with 21671

• 21671 backwards is 17612
• The number of decimal digits it has is: 5
• The sum of 21671's digits is 17
• More coming soon!