12171704 has 16 divisors (see below), whose sum is σ = 24023400. Its totient is φ = 5765472.

The previous prime is 12171697. The next prime is 12171713. The reversal of 12171704 is 40717121.

It is a self number, because there is not a number n which added to its sum of digits gives 12171704.

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, 39887 + ... + 40190.

Almost surely, 2^12171704 is an apocalyptic number.

It is an amenable number.

12171704 is a deficient number, since it is larger than the sum of its proper divisors (11851696).

12171704 is a wasteful number, since it uses less digits than its factorization.

12171704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80102 (or 80098 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 12171704 is about 3488.7969273089. The cubic root of 12171704 is about 230.0296370127.

Adding to 12171704 its reverse (40717121), we get a palindrome (52888825).

The spelling of 12171704 in words is "twelve million, one hundred seventy-one thousand, seven hundred four".