2728023 has 4 divisors (see below), whose sum is σ = 3637368. Its totient is φ = 1818680.

The previous prime is 2728013. The next prime is 2728027. The reversal of 2728023 is 3208272.

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 2728023 - 2¹⁶ = 2662487 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 2727984 and 2728002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728027) 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, 454668 + ... + 454673.

It is an arithmetic number, because the mean of its divisors is an integer number (909342).

2^2728023 is an apocalyptic number.

2728023 is a deficient number, since it is larger than the sum of its proper divisors (909345).

2728023 is an equidigital number, since it uses as much as digits as its factorization.

2728023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909344.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 2728023 is about 1651.6727884179. The cubic root of 2728023 is about 139.7277532397.

Subtracting 2728023 from its reverse (3208272), we obtain a square (480249 = 693²).

The spelling of 2728023 in words is "two million, seven hundred twenty-eight thousand, twenty-three".