2740438 has 4 divisors (see below), whose sum is σ = 4110660. Its totient is φ = 1370218.

The previous prime is 2740421. The next prime is 2740453. The reversal of 2740438 is 8340472.

2740438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685108 + ... + 685111.

It is an arithmetic number, because the mean of its divisors is an integer number (1027665).

2^2740438 is an apocalyptic number.

2740438 is a deficient number, since it is larger than the sum of its proper divisors (1370222).

2740438 is a wasteful number, since it uses less digits than its factorization.

2740438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370221.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 2740438 is about 1655.4268331763. The cubic root of 2740438 is about 139.9393955375.

The spelling of 2740438 in words is "two million, seven hundred forty thousand, four hundred thirty-eight".