3884728 has 16 divisors (see below), whose sum is σ = 7335000. Its totient is φ = 1928736.

The previous prime is 3884717. The next prime is 3884729. The reversal of 3884728 is 8274883.

It is a super-2 number, since 2×3884728² = 30182223267968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3884729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438 + ... + 2821.

Almost surely, 2^3884728 is an apocalyptic number.

It is an amenable number.

3884728 is a deficient number, since it is larger than the sum of its proper divisors (3450272).

3884728 is a wasteful number, since it uses less digits than its factorization.

3884728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414 (or 3410 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 3884728 is about 1970.9713341396. The cubic root of 3884728 is about 157.2003608518.

The spelling of 3884728 in words is "three million, eight hundred eighty-four thousand, seven hundred twenty-eight".