388193772 has 12 divisors (see below), whose sum is σ = 905785496. Its totient is φ = 129397920.

The previous prime is 388193737. The next prime is 388193789. The reversal of 388193772 is 277391883.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16174729 + ... + 16174752.

Almost surely, 2^388193772 is an apocalyptic number.

It is an amenable number.

388193772 is an abundant number, since it is smaller than the sum of its proper divisors (517591724).

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

388193772 is a wasteful number, since it uses less digits than its factorization.

388193772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32349488 (or 32349486 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 388193772 is about 19702.6336310657. The cubic root of 388193772 is about 729.4847004555.

The spelling of 388193772 in words is "three hundred eighty-eight million, one hundred ninety-three thousand, seven hundred seventy-two".