128904388 has 12 divisors (see below), whose sum is σ = 226319632. Its totient is φ = 64241640.

The previous prime is 128904383. The next prime is 128904437. The reversal of 128904388 is 883409821.

It is not an unprimeable number, because it can be changed into a prime (128904383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51258 + ... + 53713.

Almost surely, 2^128904388 is an apocalyptic number.

It is an amenable number.

128904388 is a deficient number, since it is larger than the sum of its proper divisors (97415244).

128904388 is a wasteful number, since it uses less digits than its factorization.

128904388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105282 (or 105280 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 128904388 is about 11353.6068277883. The cubic root of 128904388 is about 505.1525703111.

The spelling of 128904388 in words is "one hundred twenty-eight million, nine hundred four thousand, three hundred eighty-eight".