243129708228 has 96 divisors (see below), whose sum is σ = 623338490880. Its totient is φ = 73145600640.

The previous prime is 243129708209. The next prime is 243129708259. The reversal of 243129708228 is 822807921342.

243129708228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243129708228² (a number of 24 digits) contains 22 as substring.

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, 16868601 + ... + 16883007.

It is an arithmetic number, because the mean of its divisors is an integer number (6493109280).

Almost surely, 2^243129708228 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 243129708228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311669245440).

243129708228 is an abundant number, since it is smaller than the sum of its proper divisors (380208782652).

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

243129708228 is a wasteful number, since it uses less digits than its factorization.

243129708228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15337 (or 15335 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 243129708228 in words is "two hundred forty-three billion, one hundred twenty-nine million, seven hundred eight thousand, two hundred twenty-eight".