122191928 has 8 divisors (see below), whose sum is σ = 229109880. Its totient is φ = 61095960.

The previous prime is 122191913. The next prime is 122191933. The reversal of 122191928 is 829191221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7636988 + ... + 7637003.

It is an arithmetic number, because the mean of its divisors is an integer number (28638735).

Almost surely, 2^122191928 is an apocalyptic number.

It is an amenable number.

122191928 is a deficient number, since it is larger than the sum of its proper divisors (106917952).

122191928 is a wasteful number, since it uses less digits than its factorization.

122191928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15273997 (or 15273993 counting only the distinct ones).

The product of its digits is 5184, while the sum is 35.

The square root of 122191928 is about 11054.0457751902. The cubic root of 122191928 is about 496.2275122575.

The spelling of 122191928 in words is "one hundred twenty-two million, one hundred ninety-one thousand, nine hundred twenty-eight".