388628 has 6 divisors (see below), whose sum is σ = 680106. Its totient is φ = 194312.

The previous prime is 388621. The next prime is 388651. The reversal of 388628 is 826883.

It can be written as a sum of positive squares in only one way, i.e., 293764 + 94864 = 542^2 + 308^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 48575 + ... + 48582.

It is an arithmetic number, because the mean of its divisors is an integer number (113351).

2³⁸⁸⁶²⁸ is an apocalyptic number.

It is an amenable number.

388628 is a deficient number, since it is larger than the sum of its proper divisors (291478).

388628 is a wasteful number, since it uses less digits than its factorization.

388628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97161 (or 97159 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 388628 is about 623.4003529033. The cubic root of 388628 is about 72.9756596151.

The spelling of 388628 in words is "three hundred eighty-eight thousand, six hundred twenty-eight".