11987796 has 12 divisors (see below), whose sum is σ = 27971552. Its totient is φ = 3995928.

The previous prime is 11987783. The next prime is 11987837. The reversal of 11987796 is 69778911.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499480 + ... + 499503.

Almost surely, 2^11987796 is an apocalyptic number.

It is an amenable number.

11987796 is an abundant number, since it is smaller than the sum of its proper divisors (15983756).

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

11987796 is a wasteful number, since it uses less digits than its factorization.

11987796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998990 (or 998988 counting only the distinct ones).

The product of its digits is 190512, while the sum is 48.

The square root of 11987796 is about 3462.3396713783. The cubic root of 11987796 is about 228.8652105598.

The spelling of 11987796 in words is "eleven million, nine hundred eighty-seven thousand, seven hundred ninety-six".