28884663 has 6 divisors (see below), whose sum is σ = 41722304. Its totient is φ = 19256436.

The previous prime is 28884641. The next prime is 28884671. The reversal of 28884663 is 36648882.

It is a happy number.

It is not a de Polignac number, because 28884663 - 2⁵ = 28884631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28884613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1604695 + ... + 1604712.

Almost surely, 2^28884663 is an apocalyptic number.

28884663 is a deficient number, since it is larger than the sum of its proper divisors (12837641).

28884663 is a wasteful number, since it uses less digits than its factorization.

28884663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209413 (or 3209410 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28884663 is about 5374.4453667332. The cubic root of 28884663 is about 306.8238404822.

The spelling of 28884663 in words is "twenty-eight million, eight hundred eighty-four thousand, six hundred sixty-three".