4028566 has 4 divisors (see below), whose sum is σ = 6042852. Its totient is φ = 2014282.

The previous prime is 4028561. The next prime is 4028573. The reversal of 4028566 is 6658204.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007140 + ... + 1007143.

It is an arithmetic number, because the mean of its divisors is an integer number (1510713).

Almost surely, 2^4028566 is an apocalyptic number.

4028566 is a deficient number, since it is larger than the sum of its proper divisors (2014286).

4028566 is a wasteful number, since it uses less digits than its factorization.

4028566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014285.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 4028566 is about 2007.1287950702. The cubic root of 4028566 is about 159.1170900240.

The spelling of 4028566 in words is "four million, twenty-eight thousand, five hundred sixty-six".