388686248 has 16 divisors (see below), whose sum is σ = 729108000. Its totient is φ = 194257456.

The previous prime is 388686247. The next prime is 388686251. The reversal of 388686248 is 842686883.

It is a self number, because there is not a number n which added to its sum of digits gives 388686248.

It is not an unprimeable number, because it can be changed into a prime (388686247) 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, 11213 + ... + 30051.

It is an arithmetic number, because the mean of its divisors is an integer number (45569250).

Almost surely, 2^388686248 is an apocalyptic number.

It is an amenable number.

388686248 is a deficient number, since it is larger than the sum of its proper divisors (340421752).

388686248 is a wasteful number, since it uses less digits than its factorization.

388686248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21424 (or 21420 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 53.

The square root of 388686248 is about 19715.1273899004. The cubic root of 388686248 is about 729.7930532419.

The spelling of 388686248 in words is "three hundred eighty-eight million, six hundred eighty-six thousand, two hundred forty-eight".