3956

3956 is a natural number that comes after 3955 and before 3957. In everyday mathematics, it is notable for being an even, composite four-digit number with several interesting factorization properties.

Its prime factorization is 2^2 × 23 × 43, giving a total of 12 positive divisors. The divisors are 1, 2, 4, 23, 46, 92, 43, 86, 172, 989, 1978, and 3956. The sum of its digits is 23, and since 3956 divided by 23 equals 172, it is a Harshad (or Niven) number in base 10.

In different numeral systems, 3956 can be represented as follows: in binary it is 111101110100, in octal it is 7564, and in hexadecimal it is F74. In Roman numerals, 3956 is written as MMMCMLVI, formed by 3000 (MMM), 900 (CM), 50 (L), and 6 (VI).

There is no widely recognized constant or famous mathematical theorem specifically associated with the number 3956. It may appear in various numeric sequences, catalog identifiers, or as a general reference to a year or quantity in datasets, but it does not have a distinct, widely cited historical significance.