304004540 has 48 divisors (see below), whose sum is σ = 772535232. Its totient is φ = 98098176.

The previous prime is 304004531. The next prime is 304004573. The reversal of 304004540 is 45400403.

It is a happy number.

It is a super-2 number, since 2×304004540² = 184837520681223200, which contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61487 + ... + 66246.

It is an arithmetic number, because the mean of its divisors is an integer number (16094484).

Almost surely, 2^304004540 is an apocalyptic number.

It is an amenable number.

304004540 is an abundant number, since it is smaller than the sum of its proper divisors (468530692).

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

304004540 is a wasteful number, since it uses less digits than its factorization.

304004540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127766 (or 127764 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 304004540 is about 17435.7259671056. The cubic root of 304004540 is about 672.3984285730.

Adding to 304004540 its reverse (45400403), we get a palindrome (349404943).

The spelling of 304004540 in words is "three hundred four million, four thousand, five hundred forty".