28269775108 has 12 divisors (see below), whose sum is σ = 49952418880. Its totient is φ = 13997655432.

The previous prime is 28269775087. The next prime is 28269775109. The reversal of 28269775108 is 80157796282.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28269775109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34307568 + ... + 34308391.

Almost surely, 2^28269775108 is an apocalyptic number.

It is an amenable number.

28269775108 is a deficient number, since it is larger than the sum of its proper divisors (21682643772).

28269775108 is a wasteful number, since it uses less digits than its factorization.

28269775108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68616066 (or 68616064 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 28269775108 in words is "twenty-eight billion, two hundred sixty-nine million, seven hundred seventy-five thousand, one hundred eight".