388816 has 20 divisors (see below), whose sum is σ = 793600. Its totient is φ = 184032.

The previous prime is 388813. The next prime is 388823. The reversal of 388816 is 618883.

388816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388813) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 336 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (39680).

2³⁸⁸⁸¹⁶ is an apocalyptic number.

It is an amenable number.

388816 is an abundant number, since it is smaller than the sum of its proper divisors (404784).

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

388816 is a wasteful number, since it uses less digits than its factorization.

388816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306 (or 1300 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 388816 is about 623.5511205988. The cubic root of 388816 is about 72.9874251187.

The spelling of 388816 in words is "three hundred eighty-eight thousand, eight hundred sixteen".