2728273 has 4 divisors (see below), whose sum is σ = 2732400. Its totient is φ = 2724148.

The previous prime is 2728261. The next prime is 2728277. The reversal of 2728273 is 3728272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2728273 - 2⁵ = 2728241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2728277) 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, 823 + ... + 2476.

It is an arithmetic number, because the mean of its divisors is an integer number (683100).

2^2728273 is an apocalyptic number.

It is an amenable number.

2728273 is a deficient number, since it is larger than the sum of its proper divisors (4127).

2728273 is an equidigital number, since it uses as much as digits as its factorization.

2728273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126.

The product of its digits is 9408, while the sum is 31.

The square root of 2728273 is about 1651.7484675337. The cubic root of 2728273 is about 139.7320213942.

Subtracting 2728273 from its reverse (3728272), we obtain a palindrome (999999).

The spelling of 2728273 in words is "two million, seven hundred twenty-eight thousand, two hundred seventy-three".