388400 has 30 divisors (see below), whose sum is σ = 934092. Its totient is φ = 155200.

The previous prime is 388391. The next prime is 388403. The reversal of 388400 is 4883.

388400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×388400³ = 175775733312000000, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (388403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86 + ... + 885.

2³⁸⁸⁴⁰⁰ is an apocalyptic number.

It is an amenable number.

388400 is an abundant number, since it is smaller than the sum of its proper divisors (545692).

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

388400 is a wasteful number, since it uses less digits than its factorization.

388400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 388400 is about 623.2174580353. The cubic root of 388400 is about 72.9613857206.

The spelling of 388400 in words is "three hundred eighty-eight thousand, four hundred".