128804907 has 32 divisors (see below), whose sum is σ = 221036544. Its totient is φ = 64749600.

The previous prime is 128804891. The next prime is 128804911. The reversal of 128804907 is 709408821.

It is not a de Polignac number, because 128804907 - 2⁴ = 128804891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128804947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1833 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (6907392).

Almost surely, 2^128804907 is an apocalyptic number.

128804907 is a deficient number, since it is larger than the sum of its proper divisors (92231637).

128804907 is a wasteful number, since it uses less digits than its factorization.

128804907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18039.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 128804907 is about 11349.2249515110. The cubic root of 128804907 is about 505.0225876248.

The spelling of 128804907 in words is "one hundred twenty-eight million, eight hundred four thousand, nine hundred seven".