307668028 has 24 divisors (see below), whose sum is σ = 546452480. Its totient is φ = 151547760.

The previous prime is 307668013. The next prime is 307668077. The reversal of 307668028 is 820866703.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 198625 + ... + 200167.

Almost surely, 2^307668028 is an apocalyptic number.

It is an amenable number.

307668028 is a deficient number, since it is larger than the sum of its proper divisors (238784452).

307668028 is a wasteful number, since it uses less digits than its factorization.

307668028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257 (or 2255 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 307668028 is about 17540.4682947748. The cubic root of 307668028 is about 675.0886233889.

The spelling of 307668028 in words is "three hundred seven million, six hundred sixty-eight thousand, twenty-eight".