306397238728056 has 64 divisors (see below), whose sum is σ = 875527016736000. Its totient is φ = 87531434742528.

The previous prime is 306397238728039. The next prime is 306397238728079. The reversal of 306397238728056 is 650827832793603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109378006 + ... + 112144293.

It is an arithmetic number, because the mean of its divisors is an integer number (13680109636500).

Almost surely, 2^{306397238728056} is an apocalyptic number.

It is an amenable number.

306397238728056 is an abundant number, since it is smaller than the sum of its proper divisors (569129778007944).

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

306397238728056 is a wasteful number, since it uses less digits than its factorization.

306397238728056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221530548 (or 221530544 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 69.

The spelling of 306397238728056 in words is "three hundred six trillion, three hundred ninety-seven billion, two hundred thirty-eight million, seven hundred twenty-eight thousand, fifty-six".