305770128 has 40 divisors (see below), whose sum is σ = 809177376. Its totient is φ = 99436800.

The previous prime is 305770123. The next prime is 305770151. The reversal of 305770128 is 821077503.

It is not an unprimeable number, because it can be changed into a prime (305770121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 75718 + ... + 79653.

Almost surely, 2^305770128 is an apocalyptic number.

It is an amenable number.

305770128 is an abundant number, since it is smaller than the sum of its proper divisors (503407248).

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

305770128 is a wasteful number, since it uses less digits than its factorization.

305770128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155423 (or 155417 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 305770128 is about 17486.2839963212. The cubic root of 305770128 is about 673.6976281370.

The spelling of 305770128 in words is "three hundred five million, seven hundred seventy thousand, one hundred twenty-eight".