3920028 has 48 divisors (see below), whose sum is σ = 10913280. Its totient is φ = 1070784.

The previous prime is 3920011. The next prime is 3920029. The reversal of 3920028 is 8200293.

3920028 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

3920028 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 918 + ... + 2946.

It is an arithmetic number, because the mean of its divisors is an integer number (227360).

Almost surely, 2^3920028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3920028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5456640).

3920028 is an abundant number, since it is smaller than the sum of its proper divisors (6993252).

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

3920028 is a wasteful number, since it uses less digits than its factorization.

3920028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066 (or 2064 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 3920028 is about 1979.9060583775. The cubic root of 3920028 is about 157.6750786772.

The spelling of 3920028 in words is "three million, nine hundred twenty thousand, twenty-eight".