28647741268 has 12 divisors (see below), whose sum is σ = 50136965172. Its totient is φ = 14322894080.

The previous prime is 28647741229. The next prime is 28647741293. The reversal of 28647741268 is 86214774682.

It can be written as a sum of positive squares in 2 ways, for example, as 22054626064 + 6593115204 = 148508^2 + 81198^2 .

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, 176023 + ... + 297118.

It is an arithmetic number, because the mean of its divisors is an integer number (4178080431).

Almost surely, 2^28647741268 is an apocalyptic number.

It is an amenable number.

28647741268 is a deficient number, since it is larger than the sum of its proper divisors (21489223904).

28647741268 is a wasteful number, since it uses less digits than its factorization.

28647741268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488282 (or 488280 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 55.

The spelling of 28647741268 in words is "twenty-eight billion, six hundred forty-seven million, seven hundred forty-one thousand, two hundred sixty-eight".