28465920806 has 16 divisors (see below), whose sum is σ = 43428225600. Its totient is φ = 13989908328.

The previous prime is 28465920781. The next prime is 28465920811. The reversal of 28465920806 is 60802956482.

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, 1610525 + ... + 1628103.

It is an arithmetic number, because the mean of its divisors is an integer number (2714264100).

Almost surely, 2^28465920806 is an apocalyptic number.

28465920806 is a deficient number, since it is larger than the sum of its proper divisors (14962304794).

28465920806 is a wasteful number, since it uses less digits than its factorization.

28465920806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31363.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 28465920806 in words is "twenty-eight billion, four hundred sixty-five million, nine hundred twenty thousand, eight hundred six".