28066789832 has 8 divisors (see below), whose sum is σ = 52625230950. Its totient is φ = 14033394912.

The previous prime is 28066789801. The next prime is 28066789847. The reversal of 28066789832 is 23898766082.

It can be written as a sum of positive squares in only one way, i.e., 26688449956 + 1378339876 = 163366^2 + 37126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1754174357 + ... + 1754174372.

Almost surely, 2^28066789832 is an apocalyptic number.

It is an amenable number.

28066789832 is a deficient number, since it is larger than the sum of its proper divisors (24558441118).

28066789832 is a wasteful number, since it uses less digits than its factorization.

28066789832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508348735 (or 3508348731 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 28066789832 in words is "twenty-eight billion, sixty-six million, seven hundred eighty-nine thousand, eight hundred thirty-two".