28014521208 has 32 divisors (see below), whose sum is σ = 70455692160. Its totient is φ = 9282255200.

The previous prime is 28014521167. The next prime is 28014521231. The reversal of 28014521208 is 80212541082.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3490818 + ... + 3498833.

It is an arithmetic number, because the mean of its divisors is an integer number (2201740380).

Almost surely, 2^28014521208 is an apocalyptic number.

It is an amenable number.

28014521208 is an abundant number, since it is smaller than the sum of its proper divisors (42441170952).

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

28014521208 is a wasteful number, since it uses less digits than its factorization.

28014521208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989827 (or 6989823 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The spelling of 28014521208 in words is "twenty-eight billion, fourteen million, five hundred twenty-one thousand, two hundred eight".