2742728 has 8 divisors (see below), whose sum is σ = 5142630. Its totient is φ = 1371360.

The previous prime is 2742721. The next prime is 2742737. The reversal of 2742728 is 8272472.

It is a happy number.

2742728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2137444 + 605284 = 1462^2 + 778^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2742694 and 2742703.

It is not an unprimeable number, because it can be changed into a prime (2742721) 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 as a sum of consecutive naturals, namely, 171413 + ... + 171428.

2^2742728 is an apocalyptic number.

It is an amenable number.

2742728 is a deficient number, since it is larger than the sum of its proper divisors (2399902).

2742728 is a wasteful number, since it uses less digits than its factorization.

2742728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342847 (or 342843 counting only the distinct ones).

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

The square root of 2742728 is about 1656.1183532586. The cubic root of 2742728 is about 139.9783640034.

The spelling of 2742728 in words is "two million, seven hundred forty-two thousand, seven hundred twenty-eight".