2×54

2×54 is the product of the integers 2 and 54. In decimal arithmetic, the result is 108. The expression also illustrates the commutative property of multiplication, since 2×54 = 54×2. A quick calculation is 2×54 = 2×50 + 2×4 = 100 + 8 = 108.

Prime factorization shows that 108 = 2^2 × 3^3. The positive divisors of 108 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108. The number of divisors is (2+1)(3+1) = 12.

The sum of all divisors of 108 is 280. The sum of its proper divisors (all divisors less than 108) is 172, making 108 an abundant number. In base 10, 108 is a Harshad (Niven) number because it is divisible by the sum of its digits: 1+0+8 = 9, and 108 ÷ 9 = 12.

In other representations, 108 can be written in Roman numerals as CVIII. The value 108 also has various incidental appearances in mathematics and everyday contexts, such as being a common multiple of small integers or arising in measurements and geometric calculations involving rectangles with dimensions that multiply to 108.