28364217736 has 16 divisors (see below), whose sum is σ = 54054760140. Its totient is φ = 13949615040.

The previous prime is 28364217731. The next prime is 28364217767. The reversal of 28364217736 is 63771246382.

It can be written as a sum of positive squares in 2 ways, for example, as 26538364836 + 1825852900 = 162906^2 + 42730^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28364217736.

It is not an unprimeable number, because it can be changed into a prime (28364217731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29061211 + ... + 29062186.

Almost surely, 2^28364217736 is an apocalyptic number.

It is an amenable number.

28364217736 is a deficient number, since it is larger than the sum of its proper divisors (25690542404).

28364217736 is a wasteful number, since it uses less digits than its factorization.

28364217736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58123464 (or 58123460 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 49.

The spelling of 28364217736 in words is "twenty-eight billion, three hundred sixty-four million, two hundred seventeen thousand, seven hundred thirty-six".