2740478 has 16 divisors (see below), whose sum is σ = 4472160. Its totient is φ = 1251936.

The previous prime is 2740477. The next prime is 2740483. The reversal of 2740478 is 8740472.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351 + ... + 3317.

It is an arithmetic number, because the mean of its divisors is an integer number (279510).

2^2740478 is an apocalyptic number.

2740478 is a deficient number, since it is larger than the sum of its proper divisors (1731682).

2740478 is a wasteful number, since it uses less digits than its factorization.

2740478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 2740478 is about 1655.4389146084. The cubic root of 2740478 is about 139.9400763956.

The spelling of 2740478 in words is "two million, seven hundred forty thousand, four hundred seventy-eight".