3981028 has 12 divisors (see below), whose sum is σ = 6984432. Its totient is φ = 1985480.

The previous prime is 3981017. The next prime is 3981037. The reversal of 3981028 is 8201893.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951 + ... + 2977.

It is an arithmetic number, because the mean of its divisors is an integer number (582036).

Almost surely, 2^3981028 is an apocalyptic number.

It is an amenable number.

3981028 is a deficient number, since it is larger than the sum of its proper divisors (3003404).

3981028 is a wasteful number, since it uses less digits than its factorization.

3981028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522 (or 2520 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 3981028 is about 1995.2513626107. The cubic root of 3981028 is about 158.4887392611.

The spelling of 3981028 in words is "three million, nine hundred eighty-one thousand, twenty-eight".