28022336 has 14 divisors (see below), whose sum is σ = 55606950. Its totient is φ = 14011136.

The previous prime is 28022333. The next prime is 28022339. The reversal of 28022336 is 63322082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28022333) and next prime (28022339).

It can be written as a sum of positive squares in only one way, i.e., 23425600 + 4596736 = 4840^2 + 2144^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28022333) by changing a digit.

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 as a sum of consecutive naturals, namely, 218861 + ... + 218988.

It is an arithmetic number, because the mean of its divisors is an integer number (3971925).

Almost surely, 2^28022336 is an apocalyptic number.

It is an amenable number.

28022336 is a deficient number, since it is larger than the sum of its proper divisors (27584614).

28022336 is an equidigital number, since it uses as much as digits as its factorization.

28022336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437861 (or 437851 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 28022336 is about 5293.6127550096. The cubic root of 28022336 is about 303.7396200735.

The spelling of 28022336 in words is "twenty-eight million, twenty-two thousand, three hundred thirty-six".