2021828 has 24 divisors (see below), whose sum is σ = 3830400. Its totient is φ = 930528.

The previous prime is 2021807. The next prime is 2021837. The reversal of 2021828 is 8281202.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2453 + ... + 3171.

It is an arithmetic number, because the mean of its divisors is an integer number (159600).

2^2021828 is an apocalyptic number.

It is an amenable number.

2021828 is a deficient number, since it is larger than the sum of its proper divisors (1808572).

2021828 is a wasteful number, since it uses less digits than its factorization.

2021828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 2021828 is about 1421.9099830861. The cubic root of 2021828 is about 126.4488067941.

The spelling of 2021828 in words is "two million, twenty-one thousand, eight hundred twenty-eight".