389240 has 32 divisors (see below), whose sum is σ = 902880. Its totient is φ = 150912.

The previous prime is 389231. The next prime is 389269. The reversal of 389240 is 42983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (28215).

2³⁸⁹²⁴⁰ 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 389240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451440).

389240 is an abundant number, since it is smaller than the sum of its proper divisors (513640).

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

389240 is a wasteful number, since it uses less digits than its factorization.

389240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 389240 is about 623.8910161238. The cubic root of 389240 is about 73.0139461689.

The spelling of 389240 in words is "three hundred eighty-nine thousand, two hundred forty".