304339428 has 18 divisors (see below), whose sum is σ = 769302534. Its totient is φ = 101446464.

The previous prime is 304339421. The next prime is 304339439. The reversal of 304339428 is 824933403.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 199317924 + 105021504 = 14118^2 + 10248^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 8453873 = 304339428 / (3 + 0 + 4 + 3 + 3 + 9 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 304339392 and 304339401.

It is not an unprimeable number, because it can be changed into a prime (304339421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4226901 + ... + 4226972.

Almost surely, 2^304339428 is an apocalyptic number.

It is an amenable number.

304339428 is an abundant number, since it is smaller than the sum of its proper divisors (464963106).

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

304339428 is a wasteful number, since it uses less digits than its factorization.

304339428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8453883 (or 8453878 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 304339428 is about 17445.3268241097. The cubic root of 304339428 is about 672.6452401622.

The spelling of 304339428 in words is "three hundred four million, three hundred thirty-nine thousand, four hundred twenty-eight".