28321566112 has 48 divisors (see below), whose sum is σ = 65920901760. Its totient is φ = 11719266048.

The previous prime is 28321566103. The next prime is 28321566149. The reversal of 28321566112 is 21166512382.

It is a super-2 number, since 2×28321566112² (a number of 22 digits) contains 22 as substring.

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, 2173428 + ... + 2186419.

It is an arithmetic number, because the mean of its divisors is an integer number (1373352120).

Almost surely, 2^28321566112 is an apocalyptic number.

It is an amenable number.

28321566112 is an abundant number, since it is smaller than the sum of its proper divisors (37599335648).

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

28321566112 is a wasteful number, since it uses less digits than its factorization.

28321566112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359893 (or 4359885 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The spelling of 28321566112 in words is "twenty-eight billion, three hundred twenty-one million, five hundred sixty-six thousand, one hundred twelve".