388088228 has 12 divisors (see below), whose sum is σ = 740895792. Its totient is φ = 176403720.

The previous prime is 388088209. The next prime is 388088263. The reversal of 388088228 is 822880883.

It is a super-2 number, since 2×388088228² = 301224945424359968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4410050 + ... + 4410137.

It is an arithmetic number, because the mean of its divisors is an integer number (61741316).

Almost surely, 2^388088228 is an apocalyptic number.

It is an amenable number.

388088228 is a deficient number, since it is larger than the sum of its proper divisors (352807564).

388088228 is a wasteful number, since it uses less digits than its factorization.

388088228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8820202 (or 8820200 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 47.

The square root of 388088228 is about 19699.9550253294. The cubic root of 388088228 is about 729.4185825203.

The spelling of 388088228 in words is "three hundred eighty-eight million, eighty-eight thousand, two hundred twenty-eight".