28212541850 has 12 divisors (see below), whose sum is σ = 52475327934. Its totient is φ = 11285016720.

The previous prime is 28212541807. The next prime is 28212541891. The reversal of 28212541850 is 5814521282.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 22993779769 + 5218762081 = 151637^2 + 72241^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282125369 + ... + 282125468.

Almost surely, 2^28212541850 is an apocalyptic number.

28212541850 is a deficient number, since it is larger than the sum of its proper divisors (24262786084).

28212541850 is a wasteful number, since it uses less digits than its factorization.

28212541850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564250849 (or 564250844 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 38.

The spelling of 28212541850 in words is "twenty-eight billion, two hundred twelve million, five hundred forty-one thousand, eight hundred fifty".