72215

Names of 72215

• Cardinal: 72215 can be written as Seventy-two thousand, two hundred fifteen.

Scientific notation

• Scientific notation: 7.2215 × 10⁴

Factors of 72215

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 130

Divisors of 72215

• Number of divisors d(n): 16
• Complete list of divisors:
  1 5 11 13 55 65 101 143 505 715 1111 1313 5555 6565 14443 72215
• Sum of all divisors σ(n): 102816
• Sum of proper divisors (its aliquot sum) s(n): 30601
• 72215 is a deficient number, because the sum of its proper divisors (30601) is less than itself. Its deficiency is 41614

Bases of 72215

• Binary: 10001101000010111₂
• Hexadecimal: 0x11A17
• Base-36: 1JPZ

Squares and roots of 72215

• 72215 squared (72215²) is 5215006225
• 72215 cubed (72215³) is 376601674538375
• The square root of 72215 is 268.7284875111
• The cube root of 72215 is 41.6430443881

Scales and comparisons

• 72,215 seconds is equal to 20 hours, 3 minutes, 35 seconds.
• To count from 1 to 72,215 would take you about twenty 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 72215 cubic inches would be around 3.5 feet tall.

Recreational maths with 72215

• 72215 backwards is 51227
• The number of decimal digits it has is: 5
• The sum of 72215's digits is 17
• More coming soon!