28107568336 has 20 divisors (see below), whose sum is σ = 54630216612. Its totient is φ = 14009447936.

The previous prime is 28107568277. The next prime is 28107568337. The reversal of 28107568336 is 63386570182.

It can be written as a sum of positive squares in 2 ways, for example, as 6190542400 + 21917025936 = 78680^2 + 148044^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28107568336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28107568337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2765785 + ... + 2775928.

Almost surely, 2^28107568336 is an apocalyptic number.

It is an amenable number.

28107568336 is a deficient number, since it is larger than the sum of its proper divisors (26522648276).

28107568336 is a wasteful number, since it uses less digits than its factorization.

28107568336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542038 (or 5542032 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 28107568336 in words is "twenty-eight billion, one hundred seven million, five hundred sixty-eight thousand, three hundred thirty-six".