28347665226 has 16 divisors (see below), whose sum is σ = 56804156928. Its totient is φ = 9431084000.

The previous prime is 28347665197. The next prime is 28347665243. The reversal of 28347665226 is 62256674382.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4531050 + ... + 4537301.

It is an arithmetic number, because the mean of its divisors is an integer number (3550259808).

Almost surely, 2^28347665226 is an apocalyptic number.

28347665226 is an abundant number, since it is smaller than the sum of its proper divisors (28456491702).

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

28347665226 is a wasteful number, since it uses less digits than its factorization.

28347665226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068877.

The product of its digits is 5806080, while the sum is 51.

The spelling of 28347665226 in words is "twenty-eight billion, three hundred forty-seven million, six hundred sixty-five thousand, two hundred twenty-six".