2740390 has 16 divisors (see below), whose sum is σ = 5048208. Its totient is φ = 1070496.

The previous prime is 2740379. The next prime is 2740393. The reversal of 2740390 is 930472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2757 + ... + 3616.

It is an arithmetic number, because the mean of its divisors is an integer number (315513).

2^2740390 is an apocalyptic number.

2740390 is a deficient number, since it is larger than the sum of its proper divisors (2307818).

2740390 is a wasteful number, since it uses less digits than its factorization.

2740390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2740390 is about 1655.4123353413. The cubic root of 2740390 is about 139.9385784990.

The spelling of 2740390 in words is "two million, seven hundred forty thousand, three hundred ninety".