306939866688 has 672 divisors, whose sum is σ = 1114797465600. Its totient is φ = 80228413440.

The previous prime is 306939866687. The next prime is 306939866767. The reversal of 306939866688 is 886668939603.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (306939866687) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 326184298 + ... + 326185238.

It is an arithmetic number, because the mean of its divisors is an integer number (1658924800).

Almost surely, 2^306939866688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306939866688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557398732800).

306939866688 is an abundant number, since it is smaller than the sum of its proper divisors (807857598912).

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

306939866688 is a wasteful number, since it uses less digits than its factorization.

306939866688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 483729408, while the sum is 72.

The spelling of 306939866688 in words is "three hundred six billion, nine hundred thirty-nine million, eight hundred sixty-six thousand, six hundred eighty-eight".