28863086784 has 56 divisors (see below), whose sum is σ = 87276480768. Its totient is φ = 8246595840.

The previous prime is 28863086753. The next prime is 28863086831. The reversal of 28863086784 is 48768036882.

It is a tau number, because it is divible by the number of its divisors (56).

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, 10736412 + ... + 10739099.

Almost surely, 2^28863086784 is an apocalyptic number.

28863086784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28863086784 is an abundant number, since it is smaller than the sum of its proper divisors (58413393984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28863086784 is a wasteful number, since it uses less digits than its factorization.

28863086784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21475533 (or 21475523 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 60.

The spelling of 28863086784 in words is "twenty-eight billion, eight hundred sixty-three million, eighty-six thousand, seven hundred eighty-four".