304905380 has 24 divisors (see below), whose sum is σ = 689555832. Its totient is φ = 112580352.

The previous prime is 304905361. The next prime is 304905383. The reversal of 304905380 is 83509403.

It can be written as a sum of positive squares in 4 ways, for example, as 15429184 + 289476196 = 3928^2 + 17014^2 .

It is not an unprimeable number, because it can be changed into a prime (304905383) 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, 586097 + ... + 586616.

It is an arithmetic number, because the mean of its divisors is an integer number (28731493).

Almost surely, 2^304905380 is an apocalyptic number.

It is an amenable number.

304905380 is an abundant number, since it is smaller than the sum of its proper divisors (384650452).

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

304905380 is a wasteful number, since it uses less digits than its factorization.

304905380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172735 (or 1172733 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 304905380 is about 17461.5400237207. The cubic root of 304905380 is about 673.0619341039.

The spelling of 304905380 in words is "three hundred four million, nine hundred five thousand, three hundred eighty".