3881128 has 16 divisors (see below), whose sum is σ = 7528500. Its totient is φ = 1873536.

The previous prime is 3881113. The next prime is 3881131. The reversal of 3881128 is 8211883.

3881128 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 3849444 + 31684 = 1962^2 + 178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3881128.

It is an unprimeable number.

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, 8133 + ... + 8596.

Almost surely, 2^3881128 is an apocalyptic number.

It is an amenable number.

3881128 is a deficient number, since it is larger than the sum of its proper divisors (3647372).

3881128 is a wasteful number, since it uses less digits than its factorization.

3881128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16764 (or 16760 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 3881128 is about 1970.0578671704. The cubic root of 3881128 is about 157.1517863482.

The spelling of 3881128 in words is "three million, eight hundred eighty-one thousand, one hundred twenty-eight".