28112635266 has 16 divisors (see below), whose sum is σ = 56428253184. Its totient is φ = 9337047984.

The previous prime is 28112635249. The next prime is 28112635301. The reversal of 28112635266 is 66253621182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8455810 + ... + 8459133.

It is an arithmetic number, because the mean of its divisors is an integer number (3526765824).

Almost surely, 2^28112635266 is an apocalyptic number.

28112635266 is an abundant number, since it is smaller than the sum of its proper divisors (28315617918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28112635266 is a wasteful number, since it uses less digits than its factorization.

28112635266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16915225.

The product of its digits is 207360, while the sum is 42.

The spelling of 28112635266 in words is "twenty-eight billion, one hundred twelve million, six hundred thirty-five thousand, two hundred sixty-six".