3890028 has 24 divisors (see below), whose sum is σ = 9132480. Its totient is φ = 1288720.

The previous prime is 3890027. The next prime is 3890053. The reversal of 3890028 is 8200983.

It is a junction number, because it is equal to n+sod(n) for n = 3889977 and 3890004.

It is not an unprimeable number, because it can be changed into a prime (3890021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (380520).

Almost surely, 2^3890028 is an apocalyptic number.

It is an amenable number.

3890028 is an abundant number, since it is smaller than the sum of its proper divisors (5242452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3890028 is a wasteful number, since it uses less digits than its factorization.

3890028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 3890028 is about 1972.3153906006. The cubic root of 3890028 is about 157.2718187334.

The spelling of 3890028 in words is "three million, eight hundred ninety thousand, twenty-eight".