128173804 has 12 divisors (see below), whose sum is σ = 244695528. Its totient is φ = 58260800.

The previous prime is 128173781. The next prime is 128173807. The reversal of 128173804 is 408371821.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 128173804.

It is not an unprimeable number, because it can be changed into a prime (128173807) 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, 1456477 + ... + 1456564.

It is an arithmetic number, because the mean of its divisors is an integer number (20391294).

Almost surely, 2^128173804 is an apocalyptic number.

It is an amenable number.

128173804 is a deficient number, since it is larger than the sum of its proper divisors (116521724).

128173804 is a wasteful number, since it uses less digits than its factorization.

128173804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913056 (or 2913054 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 128173804 is about 11321.3870174992. The cubic root of 128173804 is about 504.1964202492.

The spelling of 128173804 in words is "one hundred twenty-eight million, one hundred seventy-three thousand, eight hundred four".