3886728 has 16 divisors (see below), whose sum is σ = 9716880. Its totient is φ = 1295568.

The previous prime is 3886723. The next prime is 3886733. The reversal of 3886728 is 8276883.

3886728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3886723) and next prime (3886733).

It is a self number, because there is not a number n which added to its sum of digits gives 3886728.

It is not an unprimeable number, because it can be changed into a prime (3886723) 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, 80950 + ... + 80997.

It is an arithmetic number, because the mean of its divisors is an integer number (607305).

Almost surely, 2^3886728 is an apocalyptic number.

It is an amenable number.

3886728 is an abundant number, since it is smaller than the sum of its proper divisors (5830152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3886728 is a wasteful number, since it uses less digits than its factorization.

3886728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161956 (or 161952 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 3886728 is about 1971.4786329048. The cubic root of 3886728 is about 157.2273337212.

The spelling of 3886728 in words is "three million, eight hundred eighty-six thousand, seven hundred twenty-eight".