12003996 has 12 divisors (see below), whose sum is σ = 28009352. Its totient is φ = 4001328.

The previous prime is 12003977. The next prime is 12003997. The reversal of 12003996 is 69930021.

It is a tau number, because it is divible by the number of its divisors (12).

12003996 is a modest number, since divided by 3996 gives 12 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500155 + ... + 500178.

Almost surely, 2^12003996 is an apocalyptic number.

It is an amenable number.

12003996 is an abundant number, since it is smaller than the sum of its proper divisors (16005356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12003996 is a wasteful number, since it uses less digits than its factorization.

12003996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000340 (or 1000338 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 12003996 is about 3464.6783400483. The cubic root of 12003996 is about 228.9682583466.

The spelling of 12003996 in words is "twelve million, three thousand, nine hundred ninety-six".