389220 has 48 divisors (see below), whose sum is σ = 1176000. Its totient is φ = 95616.

The previous prime is 389219. The next prime is 389227. The reversal of 389220 is 22983.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389227) 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, 531 + ... + 1029.

It is an arithmetic number, because the mean of its divisors is an integer number (24500).

2³⁸⁹²²⁰ is an apocalyptic number.

389220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588000).

389220 is an abundant number, since it is smaller than the sum of its proper divisors (786780).

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

389220 is a wasteful number, since it uses less digits than its factorization.

389220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 389220 is about 623.8749874775. The cubic root of 389220 is about 73.0126956089.

The spelling of 389220 in words is "three hundred eighty-nine thousand, two hundred twenty".