2728735 has 4 divisors (see below), whose sum is σ = 3274488. Its totient is φ = 2182984.

The previous prime is 2728711. The next prime is 2728741. The reversal of 2728735 is 5378272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2728735 - 2⁵ = 2728703 is a prime.

It is a Duffinian number.

2728735 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2728735.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272869 + ... + 272878.

It is an arithmetic number, because the mean of its divisors is an integer number (818622).

2^2728735 is an apocalyptic number.

2728735 is a deficient number, since it is larger than the sum of its proper divisors (545753).

2728735 is an equidigital number, since it uses as much as digits as its factorization.

2728735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545752.

The product of its digits is 23520, while the sum is 34.

The square root of 2728735 is about 1651.8883134159. Note that the first 3 decimals coincide. The cubic root of 2728735 is about 139.7399082577.

The spelling of 2728735 in words is "two million, seven hundred twenty-eight thousand, seven hundred thirty-five".