2728985 has 16 divisors (see below), whose sum is σ = 3783936. Its totient is φ = 1850688.

The previous prime is 2728981. The next prime is 2728997. The reversal of 2728985 is 5898272.

It is a happy number.

It is not a de Polignac number, because 2728985 - 2² = 2728981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2728981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3227 + ... + 3983.

It is an arithmetic number, because the mean of its divisors is an integer number (236496).

2^2728985 is an apocalyptic number.

It is an amenable number.

2728985 is a deficient number, since it is larger than the sum of its proper divisors (1054951).

2728985 is a wasteful number, since it uses less digits than its factorization.

2728985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 80640, while the sum is 41.

The square root of 2728985 is about 1651.9639826582. The cubic root of 2728985 is about 139.7441756698.

The spelling of 2728985 in words is "two million, seven hundred twenty-eight thousand, nine hundred eighty-five".