28303696 has 20 divisors (see below), whose sum is σ = 55874772. Its totient is φ = 13884416.

The previous prime is 28303687. The next prime is 28303733. The reversal of 28303696 is 69630382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20575296 + 7728400 = 4536^2 + 2780^2 .

It is a congruent number.

It is an unprimeable number.

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, 15841 + ... + 17536.

Almost surely, 2^28303696 is an apocalyptic number.

It is an amenable number.

28303696 is a deficient number, since it is larger than the sum of its proper divisors (27571076).

28303696 is a wasteful number, since it uses less digits than its factorization.

28303696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33438 (or 33432 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 28303696 is about 5320.1218031169. The cubic root of 28303696 is about 304.7528087625.

The spelling of 28303696 in words is "twenty-eight million, three hundred three thousand, six hundred ninety-six".