2540044 has 12 divisors (see below), whose sum is σ = 4787104. Its totient is φ = 1172304.

The previous prime is 2540033. The next prime is 2540071. The reversal of 2540044 is 4400452.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24372 + ... + 24475.

2^2540044 is an apocalyptic number.

It is an amenable number.

2540044 is a deficient number, since it is larger than the sum of its proper divisors (2247060).

2540044 is a wasteful number, since it uses less digits than its factorization.

2540044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48864 (or 48862 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2540044 is about 1593.7515490189. The cubic root of 2540044 is about 136.4416868194.

Adding to 2540044 its reverse (4400452), we get a palindrome (6940496).

The spelling of 2540044 in words is "two million, five hundred forty thousand, forty-four".