309684409928 has 32 divisors (see below), whose sum is σ = 583093209600. Its totient is φ = 154193252352.

The previous prime is 309684409913. The next prime is 309684410023. The reversal of 309684409928 is 829904486903.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

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, 7395113 + ... + 7436871.

It is an arithmetic number, because the mean of its divisors is an integer number (18221662800).

Almost surely, 2^309684409928 is an apocalyptic number.

It is an amenable number.

309684409928 is a deficient number, since it is larger than the sum of its proper divisors (273408799672).

309684409928 is a wasteful number, since it uses less digits than its factorization.

309684409928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45629 (or 45625 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 309684409928 in words is "three hundred nine billion, six hundred eighty-four million, four hundred nine thousand, nine hundred twenty-eight".