28539584250 has 128 divisors (see below), whose sum is σ = 74070097920. Its totient is φ = 7311240000.

The previous prime is 28539584209. The next prime is 28539584263. The reversal of 28539584250 is 5248593582.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28539584193 and 28539584202.

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, 3227335 + ... + 3236165.

It is an arithmetic number, because the mean of its divisors is an integer number (578672640).

Almost surely, 2^28539584250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28539584250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37035048960).

28539584250 is an abundant number, since it is smaller than the sum of its proper divisors (45530513670).

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

28539584250 is a wasteful number, since it uses less digits than its factorization.

28539584250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021 (or 9011 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 28539584250 in words is "twenty-eight billion, five hundred thirty-nine million, five hundred eighty-four thousand, two hundred fifty".