28385725848 has 64 divisors (see below), whose sum is σ = 72257875200. Its totient is φ = 9289994880.

The previous prime is 28385725831. The next prime is 28385725871. The reversal of 28385725848 is 84852758382.

It is a junction number, because it is equal to n+sod(n) for n = 28385725791 and 28385725800.

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, 807013 + ... + 841451.

It is an arithmetic number, because the mean of its divisors is an integer number (1129029300).

Almost surely, 2^28385725848 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 28385725848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36128937600).

28385725848 is an abundant number, since it is smaller than the sum of its proper divisors (43872149352).

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

28385725848 is a wasteful number, since it uses less digits than its factorization.

28385725848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35072 (or 35068 counting only the distinct ones).

The product of its digits is 34406400, while the sum is 60.

The spelling of 28385725848 in words is "twenty-eight billion, three hundred eighty-five million, seven hundred twenty-five thousand, eight hundred forty-eight".