4028506 has 8 divisors (see below), whose sum is σ = 6251220. Its totient is φ = 1944768.

The previous prime is 4028491. The next prime is 4028533. The reversal of 4028506 is 6058204.

It can be written as a sum of positive squares in 2 ways, for example, as 3861225 + 167281 = 1965^2 + 409^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 34671 + ... + 34786.

Almost surely, 2^4028506 is an apocalyptic number.

4028506 is a deficient number, since it is larger than the sum of its proper divisors (2222714).

4028506 is a wasteful number, since it uses less digits than its factorization.

4028506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69488.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4028506 is about 2007.1138482906. The cubic root of 4028506 is about 159.1163000760.

The spelling of 4028506 in words is "four million, twenty-eight thousand, five hundred six".