121628904 has 16 divisors (see below), whose sum is σ = 304072320. Its totient is φ = 40542960.

The previous prime is 121628891. The next prime is 121628909. The reversal of 121628904 is 409826121.

It is not an unprimeable number, because it can be changed into a prime (121628909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2533912 + ... + 2533959.

It is an arithmetic number, because the mean of its divisors is an integer number (19004520).

Almost surely, 2^121628904 is an apocalyptic number.

It is an amenable number.

121628904 is an abundant number, since it is smaller than the sum of its proper divisors (182443416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121628904 is a wasteful number, since it uses less digits than its factorization.

121628904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067880 (or 5067876 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 121628904 is about 11028.5494966473. The cubic root of 121628904 is about 495.4641824765.

The spelling of 121628904 in words is "one hundred twenty-one million, six hundred twenty-eight thousand, nine hundred four".