8028021 has 8 divisors (see below), whose sum is σ = 10725120. Its totient is φ = 5341472.

The previous prime is 8028019. The next prime is 8028037. The reversal of 8028021 is 1208208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8028021 - 2¹ = 8028019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8028061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645 + ... + 4058.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^8028021 is an apocalyptic number.

It is an amenable number.

8028021 is a deficient number, since it is larger than the sum of its proper divisors (2697099).

8028021 is a wasteful number, since it uses less digits than its factorization.

8028021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5275.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 8028021 is about 2833.3762545769. The cubic root of 8028021 is about 200.2332362319.

The spelling of 8028021 in words is "eight million, twenty-eight thousand, twenty-one".