28663036 has 18 divisors (see below), whose sum is σ = 51144632. Its totient is φ = 14055600.

The previous prime is 28663027. The next prime is 28663043. The reversal of 28663036 is 63036682.

It is a junction number, because it is equal to n+sod(n) for n = 28662992 and 28663010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9961 + ... + 12511.

Almost surely, 2^28663036 is an apocalyptic number.

It is an amenable number.

28663036 is a deficient number, since it is larger than the sum of its proper divisors (22481596).

28663036 is a wasteful number, since it uses less digits than its factorization.

28663036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 28663036 is about 5353.7870708499. The cubic root of 28663036 is about 306.0370894995.

The spelling of 28663036 in words is "twenty-eight million, six hundred sixty-three thousand, thirty-six".