228438735912 has 48 divisors (see below), whose sum is σ = 620320740000. Its totient is φ = 75945322656.

The previous prime is 228438735817. The next prime is 228438736003. The reversal of 228438735912 is 219537834822.

228438735912 is a `hidden beast` number, since 2 + 2 + 8 + 43 + 8 + 7 + 3 + 591 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4158412 + ... + 4212987.

It is an arithmetic number, because the mean of its divisors is an integer number (12923348750).

Almost surely, 2^228438735912 is an apocalyptic number.

It is an amenable number.

228438735912 is an abundant number, since it is smaller than the sum of its proper divisors (391882004088).

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

228438735912 is a wasteful number, since it uses less digits than its factorization.

228438735912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371790 (or 8371783 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 228438735912 in words is "two hundred twenty-eight billion, four hundred thirty-eight million, seven hundred thirty-five thousand, nine hundred twelve".