3986128 has 10 divisors (see below), whose sum is σ = 7723154. Its totient is φ = 1993056.

The previous prime is 3986113. The next prime is 3986159. The reversal of 3986128 is 8216893.

3986128 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 only one way, i.e., 3888784 + 97344 = 1972^2 + 312^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 124551 + ... + 124582.

Almost surely, 2^3986128 is an apocalyptic number.

It is an amenable number.

3986128 is a deficient number, since it is larger than the sum of its proper divisors (3737026).

3986128 is a wasteful number, since it uses less digits than its factorization.

3986128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249141 (or 249135 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 3986128 is about 1996.5289880190. The cubic root of 3986128 is about 158.5563890954.

It can be divided in two parts, 3986 and 128, that added together give a palindrome (4114).

The spelling of 3986128 in words is "three million, nine hundred eighty-six thousand, one hundred twenty-eight".