388228836 has 96 divisors (see below), whose sum is σ = 962777088. Its totient is φ = 121616640.

The previous prime is 388228801. The next prime is 388228859. The reversal of 388228836 is 638822883.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2381691 + ... + 2381853.

It is an arithmetic number, because the mean of its divisors is an integer number (10028928).

Almost surely, 2^388228836 is an apocalyptic number.

It is an amenable number.

388228836 is an abundant number, since it is smaller than the sum of its proper divisors (574548252).

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

388228836 is a wasteful number, since it uses less digits than its factorization.

388228836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its digits is 884736, while the sum is 48.

The square root of 388228836 is about 19703.5234412528. The cubic root of 388228836 is about 729.5066636118.

The spelling of 388228836 in words is "three hundred eighty-eight million, two hundred twenty-eight thousand, eight hundred thirty-six".