11979928 has 16 divisors (see below), whose sum is σ = 22562280. Its totient is φ = 5963328.

The previous prime is 11979911. The next prime is 11979931. The reversal of 11979928 is 82997911.

It is a happy number.

11979928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1350 + ... + 5077.

Almost surely, 2^11979928 is an apocalyptic number.

It is an amenable number.

11979928 is a deficient number, since it is larger than the sum of its proper divisors (10582352).

11979928 is a wasteful number, since it uses less digits than its factorization.

11979928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666 (or 6662 counting only the distinct ones).

The product of its digits is 81648, while the sum is 46.

The square root of 11979928 is about 3461.2032589838. The cubic root of 11979928 is about 228.8151289163.

The spelling of 11979928 in words is "eleven million, nine hundred seventy-nine thousand, nine hundred twenty-eight".