388624 has 20 divisors (see below), whose sum is σ = 763344. Its totient is φ = 191648.

The previous prime is 388621. The next prime is 388651. The reversal of 388624 is 426883.

It is a happy number.

388624 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-2 number, since 2×388624² = 302057226752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1599 + ... + 1825.

2³⁸⁸⁶²⁴ is an apocalyptic number.

It is an amenable number.

388624 is a deficient number, since it is larger than the sum of its proper divisors (374720).

388624 is a wasteful number, since it uses less digits than its factorization.

388624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 336 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 388624 is about 623.3971446839. The cubic root of 388624 is about 72.9754092440.

The spelling of 388624 in words is "three hundred eighty-eight thousand, six hundred twenty-four".