388630 has 16 divisors (see below), whose sum is σ = 763344. Its totient is φ = 141280.

The previous prime is 388621. The next prime is 388651. The reversal of 388630 is 36883.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657 + ... + 1876.

It is an arithmetic number, because the mean of its divisors is an integer number (47709).

2³⁸⁸⁶³⁰ is an apocalyptic number.

388630 is a deficient number, since it is larger than the sum of its proper divisors (374714).

388630 is a wasteful number, since it uses less digits than its factorization.

388630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 388630 is about 623.4019570069. The cubic root of 388630 is about 72.9757848000.

It can be divided in two parts, 3886 and 30, that added together give a triangular number (3916 = T₈₈).

The spelling of 388630 in words is "three hundred eighty-eight thousand, six hundred thirty".