28717663028 has 12 divisors (see below), whose sum is σ = 50257801440. Its totient is φ = 14358291192.

The previous prime is 28717663001. The next prime is 28717663061. The reversal of 28717663028 is 82036671782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626 + ... + 239657.

It is an arithmetic number, because the mean of its divisors is an integer number (4188150120).

Almost surely, 2^28717663028 is an apocalyptic number.

It is an amenable number.

28717663028 is a deficient number, since it is larger than the sum of its proper divisors (21540138412).

28717663028 is a wasteful number, since it uses less digits than its factorization.

28717663028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270166 (or 270164 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 28717663028 in words is "twenty-eight billion, seven hundred seventeen million, six hundred sixty-three thousand, twenty-eight".