28318165712 has 20 divisors (see below), whose sum is σ = 54869347140. Its totient is φ = 14158334208.

The previous prime is 28318165691. The next prime is 28318165723. The reversal of 28318165712 is 21756181382.

It can be written as a sum of positive squares in 2 ways, for example, as 2844728896 + 25473436816 = 53336^2 + 159604^2 .

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, 387308 + ... + 454580.

It is an arithmetic number, because the mean of its divisors is an integer number (2743467357).

Almost surely, 2^28318165712 is an apocalyptic number.

It is an amenable number.

28318165712 is a deficient number, since it is larger than the sum of its proper divisors (26551181428).

28318165712 is a wasteful number, since it uses less digits than its factorization.

28318165712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93590 (or 93584 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The spelling of 28318165712 in words is "twenty-eight billion, three hundred eighteen million, one hundred sixty-five thousand, seven hundred twelve".