388136688 has 20 divisors (see below), whose sum is σ = 1002686568. Its totient is φ = 129378880.

The previous prime is 388136687. The next prime is 388136699. The reversal of 388136688 is 886631883.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 388136688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388136681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4043043 + ... + 4043138.

Almost surely, 2^388136688 is an apocalyptic number.

It is an amenable number.

388136688 is an abundant number, since it is smaller than the sum of its proper divisors (614549880).

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

388136688 is a wasteful number, since it uses less digits than its factorization.

388136688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086192 (or 8086186 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 388136688 is about 19701.1849389827. The cubic root of 388136688 is about 729.4489417280.

The spelling of 388136688 in words is "three hundred eighty-eight million, one hundred thirty-six thousand, six hundred eighty-eight".