12117916 has 24 divisors (see below), whose sum is σ = 22176000. Its totient is φ = 5788272.

The previous prime is 12117887. The next prime is 12117929. The reversal of 12117916 is 61971121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7335 + ... + 8833.

It is an arithmetic number, because the mean of its divisors is an integer number (924000).

Almost surely, 2^12117916 is an apocalyptic number.

It is an amenable number.

12117916 is a deficient number, since it is larger than the sum of its proper divisors (10058084).

12117916 is a wasteful number, since it uses less digits than its factorization.

12117916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593 (or 1591 counting only the distinct ones).

The product of its digits is 756, while the sum is 28.

The square root of 12117916 is about 3481.0797175589. The cubic root of 12117916 is about 229.6902951917.

The spelling of 12117916 in words is "twelve million, one hundred seventeen thousand, nine hundred sixteen".