28918355084 has 24 divisors (see below), whose sum is σ = 52778183808. Its totient is φ = 13848491520.

The previous prime is 28918355083. The next prime is 28918355093. The reversal of 28918355084 is 48055381982.

It is not an unprimeable number, because it can be changed into a prime (28918355083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190099 + ... + 1214154.

It is an arithmetic number, because the mean of its divisors is an integer number (2199090992).

Almost surely, 2^28918355084 is an apocalyptic number.

It is an amenable number.

28918355084 is a deficient number, since it is larger than the sum of its proper divisors (23859828724).

28918355084 is a wasteful number, since it uses less digits than its factorization.

28918355084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404385 (or 2404383 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 28918355084 in words is "twenty-eight billion, nine hundred eighteen million, three hundred fifty-five thousand, eighty-four".