388841628 has 48 divisors (see below), whose sum is σ = 1072673280. Its totient is φ = 107265984.

The previous prime is 388841627. The next prime is 388841639. The reversal of 388841628 is 826148883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388841627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77376 + ... + 82247.

It is an arithmetic number, because the mean of its divisors is an integer number (22347360).

Almost surely, 2^388841628 is an apocalyptic number.

It is an amenable number.

388841628 is an abundant number, since it is smaller than the sum of its proper divisors (683831652).

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

388841628 is a wasteful number, since it uses less digits than its factorization.

388841628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159666 (or 159664 counting only the distinct ones).

The product of its digits is 589824, while the sum is 48.

The square root of 388841628 is about 19719.0676250172. The cubic root of 388841628 is about 729.8902868833.

The spelling of 388841628 in words is "three hundred eighty-eight million, eight hundred forty-one thousand, six hundred twenty-eight".