28239484850 has 12 divisors (see below), whose sum is σ = 52525441914. Its totient is φ = 11295793920.

The previous prime is 28239484849. The next prime is 28239484913. The reversal of 28239484850 is 5848493282.

It can be written as a sum of positive squares in 3 ways, for example, as 27588877801 + 650607049 = 166099^2 + 25507^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28239484792 and 28239484801.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282394799 + ... + 282394898.

Almost surely, 2^28239484850 is an apocalyptic number.

28239484850 is a deficient number, since it is larger than the sum of its proper divisors (24285957064).

28239484850 is a wasteful number, since it uses less digits than its factorization.

28239484850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564789709 (or 564789704 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 28239484850 in words is "twenty-eight billion, two hundred thirty-nine million, four hundred eighty-four thousand, eight hundred fifty".