228335289812 has 72 divisors (see below), whose sum is σ = 486134745600. Its totient is φ = 91907790336.

The previous prime is 228335289701. The next prime is 228335289839. The reversal of 228335289812 is 218982533822.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 3846614 + ... + 3905522.

Almost surely, 2^228335289812 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 228335289812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243067372800).

228335289812 is an abundant number, since it is smaller than the sum of its proper divisors (257799455788).

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

228335289812 is a wasteful number, since it uses less digits than its factorization.

228335289812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59433 (or 59414 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The spelling of 228335289812 in words is "two hundred twenty-eight billion, three hundred thirty-five million, two hundred eighty-nine thousand, eight hundred twelve".