388926220 has 24 divisors (see below), whose sum is σ = 817118064. Its totient is φ = 155499456.

The previous prime is 388926193. The next prime is 388926227. The reversal of 388926220 is 22629883.

It is not an unprimeable number, because it can be changed into a prime (388926227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75982 + ... + 80938.

It is an arithmetic number, because the mean of its divisors is an integer number (34046586).

Almost surely, 2^388926220 is an apocalyptic number.

It is an amenable number.

388926220 is an abundant number, since it is smaller than the sum of its proper divisors (428191844).

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

388926220 is a wasteful number, since it uses less digits than its factorization.

388926220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8889 (or 8887 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 388926220 is about 19721.2124373731. The cubic root of 388926220 is about 729.9432119458.

The spelling of 388926220 in words is "three hundred eighty-eight million, nine hundred twenty-six thousand, two hundred twenty".