2052390 has 48 divisors (see below), whose sum is σ = 5179248. Its totient is φ = 520128.

The previous prime is 2052371. The next prime is 2052409. The reversal of 2052390 is 932502.

It is an interprime number because it is at equal distance from previous prime (2052371) and next prime (2052409).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47709 + ... + 47751.

It is an arithmetic number, because the mean of its divisors is an integer number (107901).

2^2052390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2052390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2589624).

2052390 is an abundant number, since it is smaller than the sum of its proper divisors (3126858).

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

2052390 is a wasteful number, since it uses less digits than its factorization.

2052390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 2052390 is about 1432.6164874104. The cubic root of 2052390 is about 127.0827575596.

Adding to 2052390 its reverse (932502), we get a palindrome (2984892).

It can be divided in two parts, 2052 and 390, that added together give a palindrome (2442).

The spelling of 2052390 in words is "two million, fifty-two thousand, three hundred ninety".