28084653 has 12 divisors (see below), whose sum is σ = 40887808. Its totient is φ = 18574920.

The previous prime is 28084619. The next prime is 28084669. The reversal of 28084653 is 35648082.

It is not a de Polignac number, because 28084653 - 2¹⁴ = 28068269 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 (28084253) 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 11 ways as a sum of consecutive naturals, for example, 11143 + ... + 13428.

Almost surely, 2^28084653 is an apocalyptic number.

It is an amenable number.

28084653 is a deficient number, since it is larger than the sum of its proper divisors (12803155).

28084653 is a wasteful number, since it uses less digits than its factorization.

28084653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24704 (or 24701 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 28084653 is about 5299.4955420304. The cubic root of 28084653 is about 303.9646087897.

The spelling of 28084653 in words is "twenty-eight million, eighty-four thousand, six hundred fifty-three".