388368656 has 20 divisors (see below), whose sum is σ = 810346572. Its totient is φ = 179246976.

The previous prime is 388368637. The next prime is 388368671. The reversal of 388368656 is 656863883.

It can be written as a sum of positive squares in 2 ways, for example, as 144384256 + 243984400 = 12016^2 + 15620^2 .

It is a junction number, because it is equal to n+sod(n) for n = 388368598 and 388368607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933371 + ... + 933786.

Almost surely, 2^388368656 is an apocalyptic number.

It is an amenable number.

388368656 is an abundant number, since it is smaller than the sum of its proper divisors (421977916).

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

388368656 is a wasteful number, since it uses less digits than its factorization.

388368656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867178 (or 1867172 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 53.

The square root of 388368656 is about 19707.0712182201. The cubic root of 388368656 is about 729.5942299899.

The spelling of 388368656 in words is "three hundred eighty-eight million, three hundred sixty-eight thousand, six hundred fifty-six".