128936804 has 12 divisors (see below), whose sum is σ = 235449984. Its totient is φ = 61665384.

The previous prime is 128936803. The next prime is 128936837. The reversal of 128936804 is 408639821.

It is not an unprimeable number, because it can be changed into a prime (128936803) 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, 700652 + ... + 700835.

It is an arithmetic number, because the mean of its divisors is an integer number (19620832).

Almost surely, 2^128936804 is an apocalyptic number.

It is an amenable number.

128936804 is a deficient number, since it is larger than the sum of its proper divisors (106513180).

128936804 is a wasteful number, since it uses less digits than its factorization.

128936804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401514 (or 1401512 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 128936804 is about 11355.0343020178. The cubic root of 128936804 is about 505.1949108746.

The spelling of 128936804 in words is "one hundred twenty-eight million, nine hundred thirty-six thousand, eight hundred four".