28308364444896 has 96 divisors (see below), whose sum is σ = 74885640607008. Its totient is φ = 9363017441280.

The previous prime is 28308364444883. The next prime is 28308364444957. The reversal of 28308364444896 is 69844446380382.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 28308364444896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28726036 + ... + 29695148.

It is an arithmetic number, because the mean of its divisors is an integer number (780058756323).

Almost surely, 2^{28308364444896} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28308364444896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37442820303504).

28308364444896 is an abundant number, since it is smaller than the sum of its proper divisors (46577276162112).

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

28308364444896 is a wasteful number, since it uses less digits than its factorization.

28308364444896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971484 (or 971476 counting only the distinct ones).

The product of its (nonzero) digits is 764411904, while the sum is 69.

The spelling of 28308364444896 in words is "twenty-eight trillion, three hundred eight billion, three hundred sixty-four million, four hundred forty-four thousand, eight hundred ninety-six".