28760243138 has 64 divisors (see below), whose sum is σ = 49331721600. Its totient is φ = 12455439360.

The previous prime is 28760243129. The next prime is 28760243179. The reversal of 28760243138 is 83134206782.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19392545 + ... + 19394027.

It is an arithmetic number, because the mean of its divisors is an integer number (770808150).

Almost surely, 2^28760243138 is an apocalyptic number.

28760243138 is a deficient number, since it is larger than the sum of its proper divisors (20571478462).

28760243138 is a wasteful number, since it uses less digits than its factorization.

28760243138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 28760243138 in words is "twenty-eight billion, seven hundred sixty million, two hundred forty-three thousand, one hundred thirty-eight".