2540344 has 16 divisors (see below), whose sum is σ = 5043600. Its totient is φ = 1195392.

The previous prime is 2540341. The next prime is 2540389. The reversal of 2540344 is 4430452.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9204 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (315225).

2^2540344 is an apocalyptic number.

It is an amenable number.

2540344 is a deficient number, since it is larger than the sum of its proper divisors (2503256).

2540344 is a wasteful number, since it uses less digits than its factorization.

2540344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18702 (or 18698 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 2540344 is about 1593.8456637956. The cubic root of 2540344 is about 136.4470582349.

Adding to 2540344 its reverse (4430452), we get a palindrome (6970796).

The spelling of 2540344 in words is "two million, five hundred forty thousand, three hundred forty-four".