2745128 has 8 divisors (see below), whose sum is σ = 5147130. Its totient is φ = 1372560.

The previous prime is 2745121. The next prime is 2745131. The reversal of 2745128 is 8215472.

It can be written as a sum of positive squares in only one way, i.e., 2630884 + 114244 = 1622^2 + 338^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2745128.

It is not an unprimeable number, because it can be changed into a prime (2745121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171563 + ... + 171578.

2^2745128 is an apocalyptic number.

It is an amenable number.

2745128 is a deficient number, since it is larger than the sum of its proper divisors (2402002).

2745128 is a wasteful number, since it uses less digits than its factorization.

2745128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343147 (or 343143 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 2745128 is about 1656.8427807128. The cubic root of 2745128 is about 140.0191810454.

The spelling of 2745128 in words is "two million, seven hundred forty-five thousand, one hundred twenty-eight".