1996 has 6 divisors (see below), whose sum is σ = 3500.
Its totient is φ = 996.
The previous prime is 1993. The next prime is 1997. The reversal of 1996 is 6991.
It is a plaindrome in base 11 and base 16.
It is a nialpdrome in base 7 and base 13.
It is a zygodrome in base 2.
It is a self number, because there is not a number n which added to its sum of digits gives 1996.
It is not an unprimeable number, because it can be changed into a prime (1993) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246 + ... + 253.
It is an amenable number.
1996 is a deficient number, since it is larger than the sum of its proper divisors (1504).
1996 is a wasteful number, since it uses less digits than its factorization.
1996 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 503 (or 501 counting only the distinct ones).
The product of its digits is 486, while the sum is 25.
The square root of 1996 is about 44.6766158074.
The cubic root of 1996 is about 12.5908054194.
The spelling of 1996 in words is "one thousand, nine hundred ninety-six".