3684728 has 16 divisors (see below), whose sum is σ = 6935760. Its totient is φ = 1835200.

The previous prime is 3684721. The next prime is 3684749. The reversal of 3684728 is 8274863.

3684728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3684691 and 3684700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3684721) 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, 1748 + ... + 3228.

It is an arithmetic number, because the mean of its divisors is an integer number (433485).

Almost surely, 2^3684728 is an apocalyptic number.

It is an amenable number.

3684728 is a deficient number, since it is larger than the sum of its proper divisors (3251032).

3684728 is a wasteful number, since it uses less digits than its factorization.

3684728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798 (or 1794 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 3684728 is about 1919.5645339503. The cubic root of 3684728 is about 154.4549429956.

The spelling of 3684728 in words is "three million, six hundred eighty-four thousand, seven hundred twenty-eight".