2021528 has 8 divisors (see below), whose sum is σ = 3790380. Its totient is φ = 1010760.

The previous prime is 2021527. The next prime is 2021533. The reversal of 2021528 is 8251202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126338 + ... + 126353.

2^2021528 is an apocalyptic number.

It is an amenable number.

2021528 is a deficient number, since it is larger than the sum of its proper divisors (1768852).

2021528 is a wasteful number, since it uses less digits than its factorization.

2021528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252697 (or 252693 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2021528 is about 1421.8044872626. The cubic root of 2021528 is about 126.4425523025.

The spelling of 2021528 in words is "two million, twenty-one thousand, five hundred twenty-eight".