12390

Names of 12390

• Cardinal: 12390 can be written as Twelve thousand, three hundred ninety.

Scientific notation

• Scientific notation: 1.239 × 10⁴

Factors of 12390

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 76

Divisors of 12390

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 59 70 105 118 177 210 295 354 413 590 826 885 1239 1770 2065 2478 4130 6195 12390
• Sum of all divisors σ(n): 34560
• Sum of proper divisors (its aliquot sum) s(n): 22170
• 12390 is an abundant number, because the sum of its proper divisors (22170) is greater than itself. Its abundance is 9780

Bases of 12390

• Binary: 11000001100110₂
• Hexadecimal: 0x3066
• Base-36: 9K6

Squares and roots of 12390

• 12390 squared (12390²) is 153512100
• 12390 cubed (12390³) is 1902014919000
• The square root of 12390 is 111.3103768747
• The cube root of 12390 is 23.1396668583

Scales and comparisons

• 12,390 seconds is equal to 3 hours, 26 minutes, 30 seconds.
• To count from 1 to 12,390 would take you about three 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 12390 cubic inches would be around 1.9 feet tall.

Recreational maths with 12390

• 12390 backwards is 09321
• 12390 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 12390's digits is 15
• More coming soon!