2728719 has 12 divisors (see below), whose sum is σ = 4504656. Its totient is φ = 1559232.

The previous prime is 2728711. The next prime is 2728741. The reversal of 2728719 is 9178272.

2728719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2728719 - 2³ = 2728711 is a prime.

It is a super-2 number, since 2×2728719² = 14891814761922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21594 + ... + 21719.

It is an arithmetic number, because the mean of its divisors is an integer number (375388).

2^2728719 is an apocalyptic number.

2728719 is a deficient number, since it is larger than the sum of its proper divisors (1775937).

2728719 is a wasteful number, since it uses less digits than its factorization.

2728719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43326 (or 43323 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 2728719 is about 1651.8834704664. The cubic root of 2728719 is about 139.7396351345.

The spelling of 2728719 in words is "two million, seven hundred twenty-eight thousand, seven hundred nineteen".