28594645172 has 12 divisors (see below), whose sum is σ = 50602883940. Its totient is φ = 14136678336.

The previous prime is 28594645153. The next prime is 28594645181. The reversal of 28594645172 is 27154649582.

It can be written as a sum of positive squares in 2 ways, for example, as 9887518096 + 18707127076 = 99436^2 + 136774^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40160663 + ... + 40161374.

It is an arithmetic number, because the mean of its divisors is an integer number (4216906995).

Almost surely, 2^28594645172 is an apocalyptic number.

It is an amenable number.

28594645172 is a deficient number, since it is larger than the sum of its proper divisors (22008238768).

28594645172 is a wasteful number, since it uses less digits than its factorization.

28594645172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80322130 (or 80322128 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 53.

The spelling of 28594645172 in words is "twenty-eight billion, five hundred ninety-four million, six hundred forty-five thousand, one hundred seventy-two".