28011327884 has 12 divisors (see below), whose sum is σ = 49027684608. Its totient is φ = 14003418000.

The previous prime is 28011327881. The next prime is 28011327889. The reversal of 28011327884 is 48872311082.

It is not an unprimeable number, because it can be changed into a prime (28011327881) 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, 533267 + ... + 583434.

It is an arithmetic number, because the mean of its divisors is an integer number (4085640384).

Almost surely, 2^28011327884 is an apocalyptic number.

It is an amenable number.

28011327884 is a deficient number, since it is larger than the sum of its proper divisors (21016356724).

28011327884 is a wasteful number, since it uses less digits than its factorization.

28011327884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122976 (or 1122974 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 28011327884 in words is "twenty-eight billion, eleven million, three hundred twenty-seven thousand, eight hundred eighty-four".