386694574728 has 128 divisors (see below), whose sum is σ = 1205788446720. Its totient is φ = 100397928960.

The previous prime is 386694574711. The next prime is 386694574753. The reversal of 386694574728 is 827475496683.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4479300 + ... + 4564812.

It is an arithmetic number, because the mean of its divisors is an integer number (9420222240).

Almost surely, 2^386694574728 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 386694574728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602894223360).

386694574728 is an abundant number, since it is smaller than the sum of its proper divisors (819093871992).

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

386694574728 is a wasteful number, since it uses less digits than its factorization.

386694574728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87987 (or 87983 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 69.

The spelling of 386694574728 in words is "three hundred eighty-six billion, six hundred ninety-four million, five hundred seventy-four thousand, seven hundred twenty-eight".