28545314138 has 16 divisors (see below), whose sum is σ = 47368411200. Its totient is φ = 12792393600.

The previous prime is 28545314113. The next prime is 28545314141. The reversal of 28545314138 is 83141354582.

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, 9135863 + ... + 9138986.

It is an arithmetic number, because the mean of its divisors is an integer number (2960525700).

Almost surely, 2^28545314138 is an apocalyptic number.

28545314138 is a deficient number, since it is larger than the sum of its proper divisors (18823097062).

28545314138 is a wasteful number, since it uses less digits than its factorization.

28545314138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18274933.

The product of its digits is 460800, while the sum is 44.

The spelling of 28545314138 in words is "twenty-eight billion, five hundred forty-five million, three hundred fourteen thousand, one hundred thirty-eight".