2728245 has 32 divisors (see below), whose sum is σ = 4983552. Its totient is φ = 1262592.

The previous prime is 2728241. The next prime is 2728247. The reversal of 2728245 is 5428272.

It is not a de Polignac number, because 2728245 - 2² = 2728241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2904 + ... + 3726.

It is an arithmetic number, because the mean of its divisors is an integer number (155736).

2^2728245 is an apocalyptic number.

It is an amenable number.

2728245 is a deficient number, since it is larger than the sum of its proper divisors (2255307).

2728245 is a wasteful number, since it uses less digits than its factorization.

2728245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its digits is 8960, while the sum is 30.

The square root of 2728245 is about 1651.7399916452. The cubic root of 2728245 is about 139.7315433739.

The spelling of 2728245 in words is "two million, seven hundred twenty-eight thousand, two hundred forty-five".