2540744 has 8 divisors (see below), whose sum is σ = 4763910. Its totient is φ = 1270368.

The previous prime is 2540743. The next prime is 2540749. The reversal of 2540744 is 4470452.

2540744 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 438244 = 1450^2 + 662^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2540743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158789 + ... + 158804.

2^2540744 is an apocalyptic number.

It is an amenable number.

2540744 is a deficient number, since it is larger than the sum of its proper divisors (2223166).

2540744 is a wasteful number, since it uses less digits than its factorization.

2540744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317599 (or 317595 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 2540744 is about 1593.9711415204. The cubic root of 2540744 is about 136.4542194643.

The spelling of 2540744 in words is "two million, five hundred forty thousand, seven hundred forty-four".