28473438068 has 12 divisors (see below), whose sum is σ = 51546741540. Its totient is φ = 13745797632.

The previous prime is 28473438067. The next prime is 28473438079. The reversal of 28473438068 is 86083437482.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16990601104 + 11482836964 = 130348^2 + 107158^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28473438067) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 122730221 + ... + 122730452.

It is an arithmetic number, because the mean of its divisors is an integer number (4295561795).

Almost surely, 2^28473438068 is an apocalyptic number.

It is an amenable number.

28473438068 is a deficient number, since it is larger than the sum of its proper divisors (23073303472).

28473438068 is a wasteful number, since it uses less digits than its factorization.

28473438068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245460706 (or 245460704 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 28473438068 in words is "twenty-eight billion, four hundred seventy-three million, four hundred thirty-eight thousand, sixty-eight".