4005228 has 12 divisors (see below), whose sum is σ = 9345560. Its totient is φ = 1335072.

The previous prime is 4005223. The next prime is 4005229. The reversal of 4005228 is 8225004.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (4005223) 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 in 3 ways as a sum of consecutive naturals, for example, 166873 + ... + 166896.

Almost surely, 2^4005228 is an apocalyptic number.

It is an amenable number.

4005228 is an abundant number, since it is smaller than the sum of its proper divisors (5340332).

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

4005228 is a wasteful number, since it uses less digits than its factorization.

4005228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333776 (or 333774 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 4005228 is about 2001.3065732166. The cubic root of 4005228 is about 158.8092328614.

The spelling of 4005228 in words is "four million, five thousand, two hundred twenty-eight".