388138200 has 48 divisors (see below), whose sum is σ = 1203230280. Its totient is φ = 103503360.

The previous prime is 388138199. The next prime is 388138207. The reversal of 388138200 is 2831883.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388138207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 322849 + ... + 324048.

Almost surely, 2^388138200 is an apocalyptic number.

388138200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

388138200 is an abundant number, since it is smaller than the sum of its proper divisors (815092080).

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

388138200 is a wasteful number, since it uses less digits than its factorization.

388138200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646916 (or 646907 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 388138200 is about 19701.2233122718. The cubic root of 388138200 is about 729.4498889247.

The spelling of 388138200 in words is "three hundred eighty-eight million, one hundred thirty-eight thousand, two hundred".