304897128 has 32 divisors (see below), whose sum is σ = 776628000. Its totient is φ = 99714368.

The previous prime is 304897111. The next prime is 304897139. The reversal of 304897128 is 821798403.

It is a self number, because there is not a number n which added to its sum of digits gives 304897128.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118578 + ... + 121121.

It is an arithmetic number, because the mean of its divisors is an integer number (24269625).

Almost surely, 2^304897128 is an apocalyptic number.

It is an amenable number.

304897128 is an abundant number, since it is smaller than the sum of its proper divisors (471730872).

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

304897128 is a wasteful number, since it uses less digits than its factorization.

304897128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239761 (or 239757 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 304897128 is about 17461.3037313942. The cubic root of 304897128 is about 673.0558621030.

The spelling of 304897128 in words is "three hundred four million, eight hundred ninety-seven thousand, one hundred twenty-eight".