28260332168 has 8 divisors (see below), whose sum is σ = 52988122830. Its totient is φ = 14130166080.

The previous prime is 28260332167. The next prime is 28260332257. The reversal of 28260332168 is 86123306282.

It can be written as a sum of positive squares in only one way, i.e., 28251558724 + 8773444 = 168082^2 + 2962^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28260332167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1766270753 + ... + 1766270768.

Almost surely, 2^28260332168 is an apocalyptic number.

It is an amenable number.

28260332168 is a deficient number, since it is larger than the sum of its proper divisors (24727790662).

28260332168 is a wasteful number, since it uses less digits than its factorization.

28260332168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532541527 (or 3532541523 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 28260332168 in words is "twenty-eight billion, two hundred sixty million, three hundred thirty-two thousand, one hundred sixty-eight".