4021028 has 12 divisors (see below), whose sum is σ = 7676592. Its totient is φ = 1827720.

The previous prime is 4021019. The next prime is 4021033. The reversal of 4021028 is 8201204.

It is a junction number, because it is equal to n+sod(n) for n = 4020997 and 4021015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45650 + ... + 45737.

It is an arithmetic number, because the mean of its divisors is an integer number (639716).

Almost surely, 2^4021028 is an apocalyptic number.

It is an amenable number.

4021028 is a deficient number, since it is larger than the sum of its proper divisors (3655564).

4021028 is a wasteful number, since it uses less digits than its factorization.

4021028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91402 (or 91400 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4021028 is about 2005.2501090886. The cubic root of 4021028 is about 159.0177847543.

The spelling of 4021028 in words is "four million, twenty-one thousand, twenty-eight".