306997304 has 8 divisors (see below), whose sum is σ = 575619960. Its totient is φ = 153498648.

The previous prime is 306997303. The next prime is 306997319. The reversal of 306997304 is 403799603.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306997303) by changing a digit.

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 as a sum of consecutive naturals, namely, 19187324 + ... + 19187339.

It is an arithmetic number, because the mean of its divisors is an integer number (71952495).

Almost surely, 2^306997304 is an apocalyptic number.

It is an amenable number.

306997304 is a deficient number, since it is larger than the sum of its proper divisors (268622656).

306997304 is a wasteful number, since it uses less digits than its factorization.

306997304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38374669 (or 38374665 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 306997304 is about 17521.3385333427. The cubic root of 306997304 is about 674.5976964409.

The spelling of 306997304 in words is "three hundred six million, nine hundred ninety-seven thousand, three hundred four".