28864802 has 18 divisors (see below), whose sum is σ = 45186609. Its totient is φ = 13828360.

The previous prime is 28864789. The next prime is 28864817. The reversal of 28864802 is 20846882.

It can be written as a sum of positive squares in 2 ways, for example, as 28847641 + 17161 = 5371^2 + 131^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3799.

It is a Duffinian number.

It is an unprimeable number.

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 in 8 ways as a sum of consecutive naturals, for example, 220277 + ... + 220407.

Almost surely, 2^28864802 is an apocalyptic number.

28864802 is a deficient number, since it is larger than the sum of its proper divisors (16321807).

28864802 is an equidigital number, since it uses as much as digits as its factorization.

28864802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 28864802 is about 5372.5973234554. The cubic root of 28864802 is about 306.7535006676.

The spelling of 28864802 in words is "twenty-eight million, eight hundred sixty-four thousand, eight hundred two".