3871628 has 12 divisors (see below), whose sum is σ = 6868680. Its totient is φ = 1909152.

The previous prime is 3871619. The next prime is 3871657. The reversal of 3871628 is 8261783.

3871628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 6338 + ... + 6921.

It is an arithmetic number, because the mean of its divisors is an integer number (572390).

Almost surely, 2^3871628 is an apocalyptic number.

It is an amenable number.

3871628 is a deficient number, since it is larger than the sum of its proper divisors (2997052).

3871628 is a wasteful number, since it uses less digits than its factorization.

3871628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336 (or 13334 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 3871628 is about 1967.6452932376. The cubic root of 3871628 is about 157.0234592448.

It can be divided in two parts, 387 and 1628, that multiplied together give a palindrome (630036).

The spelling of 3871628 in words is "three million, eight hundred seventy-one thousand, six hundred twenty-eight".