2728255 has 4 divisors (see below), whose sum is σ = 3273912. Its totient is φ = 2182600.

The previous prime is 2728247. The next prime is 2728259. The reversal of 2728255 is 5528272.

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

It is not a de Polignac number, because 2728255 - 2³ = 2728247 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728259) 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, 272821 + ... + 272830.

It is an arithmetic number, because the mean of its divisors is an integer number (818478).

2^2728255 is an apocalyptic number.

2728255 is a deficient number, since it is larger than the sum of its proper divisors (545657).

2728255 is an equidigital number, since it uses as much as digits as its factorization.

2728255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545656.

The product of its digits is 11200, while the sum is 31.

The square root of 2728255 is about 1651.7430187532. The cubic root of 2728255 is about 139.7317140958.

It can be divided in two parts, 27 and 28255, that added together give a palindrome (28282).

The spelling of 2728255 in words is "two million, seven hundred twenty-eight thousand, two hundred fifty-five".