388566 has 12 divisors (see below), whose sum is σ = 841932. Its totient is φ = 129516.

The previous prime is 388541. The next prime is 388567. The reversal of 388566 is 665883.

It is a self number, because there is not a number n which added to its sum of digits gives 388566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10776 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (70161).

2³⁸⁸⁵⁶⁶ is an apocalyptic number.

388566 is an abundant number, since it is smaller than the sum of its proper divisors (453366).

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

388566 is a wasteful number, since it uses less digits than its factorization.

388566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21595 (or 21592 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 388566 is about 623.3506236461. The cubic root of 388566 is about 72.9717786703.

The spelling of 388566 in words is "three hundred eighty-eight thousand, five hundred sixty-six".