2728263 has 12 divisors (see below), whose sum is σ = 3735464. Its totient is φ = 1771200.

The previous prime is 2728261. The next prime is 2728277. The reversal of 2728263 is 3628272.

It is not a de Polignac number, because 2728263 - 2¹ = 2728261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2728263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4773 + ... + 5313.

2^2728263 is an apocalyptic number.

2728263 is a deficient number, since it is larger than the sum of its proper divisors (1007201).

2728263 is an equidigital number, since it uses as much as digits as its factorization.

2728263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 585 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 2728263 is about 1651.7454404357. The cubic root of 2728263 is about 139.7318506730.

Subtracting 2728263 from its reverse (3628272), we obtain a palindrome (900009).

The spelling of 2728263 in words is "two million, seven hundred twenty-eight thousand, two hundred sixty-three".