388648330 has 64 divisors (see below), whose sum is σ = 816334848. Its totient is φ = 130478400.

The previous prime is 388648297. The next prime is 388648331. The reversal of 388648330 is 33846883.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (388648331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 877089 + ... + 877531.

It is an arithmetic number, because the mean of its divisors is an integer number (12755232).

Almost surely, 2^388648330 is an apocalyptic number.

388648330 is an abundant number, since it is smaller than the sum of its proper divisors (427686518).

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

388648330 is a wasteful number, since it uses less digits than its factorization.

388648330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 388648330 is about 19714.1657190965. The cubic root of 388648330 is about 729.7693209960.

The spelling of 388648330 in words is "three hundred eighty-eight million, six hundred forty-eight thousand, three hundred thirty".