2740728 has 16 divisors (see below), whose sum is σ = 6851880. Its totient is φ = 913568.

The previous prime is 2740721. The next prime is 2740733. The reversal of 2740728 is 8270472.

It is a junction number, because it is equal to n+sod(n) for n = 2740695 and 2740704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2740721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57075 + ... + 57122.

2^2740728 is an apocalyptic number.

It is an amenable number.

2740728 is an abundant number, since it is smaller than the sum of its proper divisors (4111152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2740728 is a wasteful number, since it uses less digits than its factorization.

2740728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114206 (or 114202 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2740728 is about 1655.5144215621. The cubic root of 2740728 is about 139.9443316089.

It can be divided in two parts, 27 and 40728, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 2740728 in words is "two million, seven hundred forty thousand, seven hundred twenty-eight".