388892 has 48 divisors (see below), whose sum is σ = 887040. Its totient is φ = 145152.

The previous prime is 388891. The next prime is 388897. The reversal of 388892 is 298883.

388892 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9023 + ... + 9065.

It is an arithmetic number, because the mean of its divisors is an integer number (18480).

2³⁸⁸⁸⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (443520).

388892 is an abundant number, since it is smaller than the sum of its proper divisors (498148).

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

388892 is a wasteful number, since it uses less digits than its factorization.

388892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 88 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 388892 is about 623.6120588956. The cubic root of 388892 is about 72.9921803096.

Subtracting from 388892 its reverse (298883), we obtain a palindrome (90009).

The spelling of 388892 in words is "three hundred eighty-eight thousand, eight hundred ninety-two".