388216 has 8 divisors (see below), whose sum is σ = 727920. Its totient is φ = 194104.

The previous prime is 388211. The next prime is 388231. The reversal of 388216 is 612883.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388211) 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 as a sum of consecutive naturals, namely, 24256 + ... + 24271.

It is an arithmetic number, because the mean of its divisors is an integer number (90990).

2³⁸⁸²¹⁶ is an apocalyptic number.

It is an amenable number.

388216 is a deficient number, since it is larger than the sum of its proper divisors (339704).

388216 is a wasteful number, since it uses less digits than its factorization.

388216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48533 (or 48529 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 388216 is about 623.0698195227. The cubic root of 388216 is about 72.9498623636.

The spelling of 388216 in words is "three hundred eighty-eight thousand, two hundred sixteen".