2728634 has 8 divisors (see below), whose sum is σ = 4114740. Its totient is φ = 1357056.

The previous prime is 2728631. The next prime is 2728643. The reversal of 2728634 is 4368272.

2728634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2608225 + 120409 = 1615^2 + 347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹⁹ + 7³ + 2¹⁹ + 8 + 6⁸ + 3³ + 4³ .

It is a self number, because there is not a number n which added to its sum of digits gives 2728634.

It is not an unprimeable number, because it can be changed into a prime (2728631) 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 3 ways as a sum of consecutive naturals, for example, 3149 + ... + 3920.

2^2728634 is an apocalyptic number.

2728634 is a deficient number, since it is larger than the sum of its proper divisors (1386106).

2728634 is a wasteful number, since it uses less digits than its factorization.

2728634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7264.

The product of its digits is 16128, while the sum is 32.

The square root of 2728634 is about 1651.8577420589. The cubic root of 2728634 is about 139.7381841493.

The spelling of 2728634 in words is "two million, seven hundred twenty-eight thousand, six hundred thirty-four".