304000638 has 16 divisors (see below), whose sum is σ = 609747600. Its totient is φ = 101042496.

The previous prime is 304000603. The next prime is 304000639. The reversal of 304000638 is 836000403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304000639) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70495 + ... + 74682.

It is an arithmetic number, because the mean of its divisors is an integer number (38109225).

Almost surely, 2^304000638 is an apocalyptic number.

304000638 is an abundant number, since it is smaller than the sum of its proper divisors (305746962).

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

304000638 is a wasteful number, since it uses less digits than its factorization.

304000638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145531.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 304000638 is about 17435.6140700579. The cubic root of 304000638 is about 672.3955517411.

The spelling of 304000638 in words is "three hundred four million, six hundred thirty-eight", and thus it is an aban number.