2728323 has 20 divisors (see below), whose sum is σ = 4390848. Its totient is φ = 1678320.

The previous prime is 2728321. The next prime is 2728331. The reversal of 2728323 is 3238272.

It is not a de Polignac number, because 2728323 - 2¹ = 2728321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2728321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 243 + ... + 2348.

2^2728323 is an apocalyptic number.

2728323 is a deficient number, since it is larger than the sum of its proper divisors (1662525).

2728323 is a wasteful number, since it uses less digits than its factorization.

2728323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 2607 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 2728323 is about 1651.7636029408. The cubic root of 2728323 is about 139.7328749938.

The spelling of 2728323 in words is "two million, seven hundred twenty-eight thousand, three hundred twenty-three".