389628 has 36 divisors (see below), whose sum is σ = 1004640. Its totient is φ = 127296.

The previous prime is 389621. The next prime is 389629. The reversal of 389628 is 826983.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 389592 and 389601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389621) by changing a digit.

389628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2776 + ... + 2912.

2³⁸⁹⁶²⁸ 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 389628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502320).

389628 is an abundant number, since it is smaller than the sum of its proper divisors (615012).

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

389628 is a wasteful number, since it uses less digits than its factorization.

389628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 221 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 389628 is about 624.2018904169. The cubic root of 389628 is about 73.0381985610.

The spelling of 389628 in words is "three hundred eighty-nine thousand, six hundred twenty-eight".