389178 has 16 divisors (see below), whose sum is σ = 864960. Its totient is φ = 129708.

The previous prime is 389173. The next prime is 389189. The reversal of 389178 is 871983.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3550 + ... + 3657.

It is an arithmetic number, because the mean of its divisors is an integer number (54060).

2³⁸⁹¹⁷⁸ is an apocalyptic number.

389178 is an abundant number, since it is smaller than the sum of its proper divisors (475782).

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

389178 is a wasteful number, since it uses less digits than its factorization.

389178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7218 (or 7212 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 389178 is about 623.8413259796. The cubic root of 389178 is about 73.0100692935.

It can be divided in two parts, 3891 and 78, that added together give a square (3969 = 63²).

The spelling of 389178 in words is "three hundred eighty-nine thousand, one hundred seventy-eight".