2021328 has 40 divisors (see below), whose sum is σ = 5803200. Its totient is φ = 673632.

The previous prime is 2021321. The next prime is 2021333. The reversal of 2021328 is 8231202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2021328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1908 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (145080).

2^2021328 is an apocalyptic number.

It is an amenable number.

2021328 is an abundant number, since it is smaller than the sum of its proper divisors (3781872).

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

2021328 is a wasteful number, since it uses less digits than its factorization.

2021328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4696 (or 4684 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2021328 is about 1421.7341523646. The cubic root of 2021328 is about 126.4383822977.

The spelling of 2021328 in words is "two million, twenty-one thousand, three hundred twenty-eight".