1520

Names of 1520

• Cardinal: 1520 can be written as One thousand, five hundred twenty.

Scientific notation

• Scientific notation: 1.52 × 10³

Factors of 1520

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 26

Divisors of 1520

• Number of divisors d(n): 20
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 38 40 76 80 95 152 190 304 380 760 1520
• Sum of all divisors σ(n): 3720
• Sum of proper divisors (its aliquot sum) s(n): 2200
• 1520 is an abundant number, because the sum of its proper divisors (2200) is greater than itself. Its abundance is 680

Bases of 1520

• Binary: 10111110000₂
• Hexadecimal: 0x5F0
• Base-36: 168

Squares and roots of 1520

• 1520 squared (1520²) is 2310400
• 1520 cubed (1520³) is 3511808000
• The square root of 1520 is 38.9871773795
• The cube root of 1520 is 11.4977941579

Scales and comparisons

• 1,520 seconds is equal to 25 minutes, 20 seconds.
• To count from 1 to 1,520 would take you about twenty-five minutes.

  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 1520 cubic inches would be around 1 feet tall.

Recreational maths with 1520

• 1520 backwards is 0251
• 1520 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 1520's digits is 8
• More coming soon!