804128784 has 80 divisors (see below), whose sum is σ = 2102240448. Its totient is φ = 264854016.

The previous prime is 804128749. The next prime is 804128797. The reversal of 804128784 is 487821408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2619159 + ... + 2619465.

Almost surely, 2^804128784 is an apocalyptic number.

It is an amenable number.

804128784 is an abundant number, since it is smaller than the sum of its proper divisors (1298111664).

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

804128784 is a wasteful number, since it uses less digits than its factorization.

804128784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792 (or 786 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 42.

The square root of 804128784 is about 28357.1645973288. The cubic root of 804128784 is about 929.9120370035.

The spelling of 804128784 in words is "eight hundred four million, one hundred twenty-eight thousand, seven hundred eighty-four".