21172071

Names of 21172071

• Cardinal: 21172071 can be written as Twenty-one million, one hundred seventy-two thousand and seventy-one.

Scientific notation

• Scientific notation: 2.1172071 × 10⁷

Factors of 21172071

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 14645

Divisors of 21172071

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 499 1497 14143 42429 7057357 21172071
• Sum of all divisors σ(n): 28288000
• Sum of proper divisors (its aliquot sum) s(n): 7115929
• 21172071 is a deficient number, because the sum of its proper divisors (7115929) is less than itself. Its deficiency is 14056142

Bases of 21172071

• Binary: 1010000110000111101100111₂
• Hexadecimal: 0x1430F67
• Base-36: CLSH3

Squares and roots of 21172071

• 21172071 squared (21172071²) is 448256590429041
• 21172071 cubed (21172071³) is 9490520358781576513911
• The square root of 21172071 is 4601.3118781495
• The cube root of 21172071 is 276.6439098393

Scales and comparisons

• 21,172,071 seconds is equal to 35 weeks, 1 hour, 7 minutes, 51 seconds.
• To count from 1 to 21,172,071 would take you about three days!

  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 21172071 cubic inches would be around 23.1 feet tall.

Recreational maths with 21172071

• 21172071 backwards is 17027112
• The number of decimal digits it has is: 8
• The sum of 21172071's digits is 21
• More coming soon!