28398709616382 has 128 divisors (see below), whose sum is σ = 77164277836800. Its totient is φ = 7560854409600.

The previous prime is 28398709616371. The next prime is 28398709616471. The reversal of 28398709616382 is 28361690789382.

28398709616382 is a `hidden beast` number, since 2 + 8 + 3 + 98 + 70 + 96 + 1 + 6 + 382 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28398709616382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31972969 + ... + 32849172.

It is an arithmetic number, because the mean of its divisors is an integer number (602845920600).

Almost surely, 2^{28398709616382} is an apocalyptic number.

28398709616382 is an abundant number, since it is smaller than the sum of its proper divisors (48765568220418).

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

28398709616382 is a wasteful number, since it uses less digits than its factorization.

28398709616382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64822239 (or 64822233 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 72.

The spelling of 28398709616382 in words is "twenty-eight trillion, three hundred ninety-eight billion, seven hundred nine million, six hundred sixteen thousand, three hundred eighty-two".