12117904 has 20 divisors (see below), whose sum is σ = 23564464. Its totient is φ = 6036768.

The previous prime is 12117887. The next prime is 12117929. The reversal of 12117904 is 40971121.

12117904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3679 + ... + 6145.

Almost surely, 2^12117904 is an apocalyptic number.

It is an amenable number.

12117904 is a deficient number, since it is larger than the sum of its proper divisors (11446560).

12117904 is a wasteful number, since it uses less digits than its factorization.

12117904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782 (or 2776 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 12117904 is about 3481.0779939553. The cubic root of 12117904 is about 229.6902193733.

The spelling of 12117904 in words is "twelve million, one hundred seventeen thousand, nine hundred four".