121572688 has 20 divisors (see below), whose sum is σ = 236070208. Its totient is φ = 60651360.

The previous prime is 121572679. The next prime is 121572707. The reversal of 121572688 is 886275121.

It is a self number, because there is not a number n which added to its sum of digits gives 121572688.

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, 798 + ... + 15613.

Almost surely, 2^121572688 is an apocalyptic number.

It is an amenable number.

121572688 is a deficient number, since it is larger than the sum of its proper divisors (114497520).

121572688 is a wasteful number, since it uses less digits than its factorization.

121572688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16882 (or 16876 counting only the distinct ones).

The product of its digits is 53760, while the sum is 40.

The square root of 121572688 is about 11026.0005441683. Note that the first 3 decimals coincide. The cubic root of 121572688 is about 495.3878373923.

The spelling of 121572688 in words is "one hundred twenty-one million, five hundred seventy-two thousand, six hundred eighty-eight".