304133240 has 32 divisors (see below), whose sum is σ = 698863680. Its totient is φ = 119064192.

The previous prime is 304133227. The next prime is 304133279. The reversal of 304133240 is 42331403.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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, 79007 + ... + 82766.

It is an arithmetic number, because the mean of its divisors is an integer number (21839490).

Almost surely, 2^304133240 is an apocalyptic number.

It is an amenable number.

304133240 is an abundant number, since it is smaller than the sum of its proper divisors (394730440).

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

304133240 is a wasteful number, since it uses less digits than its factorization.

304133240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161831 (or 161827 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 304133240 is about 17439.4162746349. The cubic root of 304133240 is about 672.4933015737.

Adding to 304133240 its reverse (42331403), we get a palindrome (346464643).

The spelling of 304133240 in words is "three hundred four million, one hundred thirty-three thousand, two hundred forty".