2544390 has 48 divisors (see below), whose sum is σ = 7008768. Its totient is φ = 638208.

The previous prime is 2544383. The next prime is 2544391. The reversal of 2544390 is 934452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 699 + ... + 2361.

It is an arithmetic number, because the mean of its divisors is an integer number (146016).

2^2544390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2544390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3504384).

2544390 is an abundant number, since it is smaller than the sum of its proper divisors (4464378).

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

2544390 is a wasteful number, since it uses less digits than its factorization.

2544390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2544390 is about 1595.1144159589. The cubic root of 2544390 is about 136.5194594485.

The spelling of 2544390 in words is "two million, five hundred forty-four thousand, three hundred ninety".