28020465568 has 48 divisors (see below), whose sum is σ = 56097951840. Its totient is φ = 13774185216.

The previous prime is 28020465541. The next prime is 28020465587. The reversal of 28020465568 is 86556402082.

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, 1108818 + ... + 1133806.

It is an arithmetic number, because the mean of its divisors is an integer number (1168707330).

Almost surely, 2^28020465568 is an apocalyptic number.

It is an amenable number.

28020465568 is an abundant number, since it is smaller than the sum of its proper divisors (28077486272).

28020465568 is a wasteful number, since it uses less digits than its factorization.

28020465568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25589 (or 25581 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 28020465568 in words is "twenty-eight billion, twenty million, four hundred sixty-five thousand, five hundred sixty-eight".