2740457 has 4 divisors (see below), whose sum is σ = 2747220. Its totient is φ = 2733696.

The previous prime is 2740453. The next prime is 2740459. The reversal of 2740457 is 7540472.

2740457 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 can be written as a sum of positive squares in 2 ways, for example, as 1142761 + 1597696 = 1069^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 2740457 - 2² = 2740453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2740453) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2732 + ... + 3597.

It is an arithmetic number, because the mean of its divisors is an integer number (686805).

2^2740457 is an apocalyptic number.

It is an amenable number.

2740457 is a deficient number, since it is larger than the sum of its proper divisors (6763).

2740457 is an equidigital number, since it uses as much as digits as its factorization.

2740457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6762.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 2740457 is about 1655.4325718675. The cubic root of 2740457 is about 139.9397189459.

It can be divided in two parts, 27404 and 57, that multiplied together give a triangular number (1562028 = T₁₇₆₇).

The spelling of 2740457 in words is "two million, seven hundred forty thousand, four hundred fifty-seven".