2728894 has 16 divisors (see below), whose sum is σ = 4924800. Its totient is φ = 1107864.

The previous prime is 2728889. The next prime is 2728907. The reversal of 2728894 is 4988272.

2728894 = 72² + 73² + ... + 204².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4864 + ... + 5395.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

2^2728894 is an apocalyptic number.

2728894 is a deficient number, since it is larger than the sum of its proper divisors (2195906).

2728894 is a wasteful number, since it uses less digits than its factorization.

2728894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10287.

The product of its digits is 64512, while the sum is 40.

The square root of 2728894 is about 1651.9364394552. The cubic root of 2728894 is about 139.7426223620.

The spelling of 2728894 in words is "two million, seven hundred twenty-eight thousand, eight hundred ninety-four".