228320831872 has 256 divisors, whose sum is σ = 567103680000. Its totient is φ = 89390186496.

The previous prime is 228320831867. The next prime is 228320831881. The reversal of 228320831872 is 278138023822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53231904 + ... + 53236192.

It is an arithmetic number, because the mean of its divisors is an integer number (2215248750).

Almost surely, 2^228320831872 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 228320831872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283551840000).

228320831872 is an abundant number, since it is smaller than the sum of its proper divisors (338782848128).

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

228320831872 is a wasteful number, since it uses less digits than its factorization.

228320831872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 228320831872 in words is "two hundred twenty-eight billion, three hundred twenty million, eight hundred thirty-one thousand, eight hundred seventy-two".