3902728 has 16 divisors (see below), whose sum is σ = 7421760. Its totient is φ = 1923600.

The previous prime is 3902713. The next prime is 3902747. The reversal of 3902728 is 8272093.

It is a self number, because there is not a number n which added to its sum of digits gives 3902728.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2868 + ... + 4003.

It is an arithmetic number, because the mean of its divisors is an integer number (463860).

Almost surely, 2^3902728 is an apocalyptic number.

It is an amenable number.

3902728 is a deficient number, since it is larger than the sum of its proper divisors (3519032).

3902728 is a wasteful number, since it uses less digits than its factorization.

3902728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6948 (or 6944 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3902728 is about 1975.5323333218. The cubic root of 3902728 is about 157.4427842902.

The spelling of 3902728 in words is "three million, nine hundred two thousand, seven hundred twenty-eight".