2389290 has 32 divisors (see below), whose sum is σ = 5818176. Its totient is φ = 627840.

The previous prime is 2389279. The next prime is 2389297. The reversal of 2389290 is 929832.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389297) 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, 1645 + ... + 2735.

It is an arithmetic number, because the mean of its divisors is an integer number (181818).

2^2389290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2389290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2909088).

2389290 is an abundant number, since it is smaller than the sum of its proper divisors (3428886).

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

2389290 is a wasteful number, since it uses less digits than its factorization.

2389290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 2389290 is about 1545.7328359066. The cubic root of 2389290 is about 133.6871367322.

The spelling of 2389290 in words is "two million, three hundred eighty-nine thousand, two hundred ninety".