388385020 has 12 divisors (see below), whose sum is σ = 815608584. Its totient is φ = 155354000.

The previous prime is 388385003. The next prime is 388385021. The reversal of 388385020 is 20583883.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388385021) 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, 9709606 + ... + 9709645.

It is an arithmetic number, because the mean of its divisors is an integer number (67967382).

Almost surely, 2^388385020 is an apocalyptic number.

It is an amenable number.

388385020 is an abundant number, since it is smaller than the sum of its proper divisors (427223564).

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

388385020 is a wasteful number, since it uses less digits than its factorization.

388385020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19419260 (or 19419258 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 388385020 is about 19707.4863947689. The cubic root of 388385020 is about 729.6044770512.

The spelling of 388385020 in words is "three hundred eighty-eight million, three hundred eighty-five thousand, twenty".