28640027206 has 16 divisors (see below), whose sum is σ = 49115635200. Its totient is φ = 12269685960.

The previous prime is 28640027191. The next prime is 28640027243. The reversal of 28640027206 is 60272004682.

It is a congruent number.

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, 345556 + ... + 420343.

It is an arithmetic number, because the mean of its divisors is an integer number (3069727200).

Almost surely, 2^28640027206 is an apocalyptic number.

28640027206 is a deficient number, since it is larger than the sum of its proper divisors (20475607994).

28640027206 is a wasteful number, since it uses less digits than its factorization.

28640027206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768579.

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 28640027206 in words is "twenty-eight billion, six hundred forty million, twenty-seven thousand, two hundred six".