388806 has 32 divisors (see below), whose sum is σ = 874368. Its totient is φ = 114240.

The previous prime is 388793. The next prime is 388813. The reversal of 388806 is 608883.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2770 + ... + 2906.

It is an arithmetic number, because the mean of its divisors is an integer number (27324).

2³⁸⁸⁸⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437184).

388806 is an abundant number, since it is smaller than the sum of its proper divisors (485562).

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

388806 is a wasteful number, since it uses less digits than its factorization.

388806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 388806 is about 623.5431019585. The cubic root of 388806 is about 72.9867993895.

The spelling of 388806 in words is "three hundred eighty-eight thousand, eight hundred six".