7021028 has 12 divisors (see below), whose sum is σ = 14042112. Its totient is φ = 3009000.

The previous prime is 7020991. The next prime is 7021033. The reversal of 7021028 is 8201207.

7021028 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 125348 + ... + 125403.

It is an arithmetic number, because the mean of its divisors is an integer number (1170176).

Almost surely, 2^7021028 is an apocalyptic number.

It is an amenable number.

7021028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7021028 is a wasteful number, since it uses less digits than its factorization.

7021028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250762 (or 250760 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 7021028 is about 2649.7222495952. The cubic root of 7021028 is about 191.4844749689.

The spelling of 7021028 in words is "seven million, twenty-one thousand, twenty-eight".