304128427 has 8 divisors (see below), whose sum is σ = 305971200. Its totient is φ = 302291880.

The previous prime is 304128413. The next prime is 304128431. The reversal of 304128427 is 724821403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 304128427 - 2⁷ = 304128299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304128457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125574 + ... + 127972.

It is an arithmetic number, because the mean of its divisors is an integer number (38246400).

Almost surely, 2^304128427 is an apocalyptic number.

304128427 is a deficient number, since it is larger than the sum of its proper divisors (1842773).

304128427 is a wasteful number, since it uses less digits than its factorization.

304128427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 304128427 is about 17439.2782820850. The cubic root of 304128427 is about 672.4897540854.

The spelling of 304128427 in words is "three hundred four million, one hundred twenty-eight thousand, four hundred twenty-seven".