228031232 has 72 divisors (see below), whose sum is σ = 534833040. Its totient is φ = 95662080.

The previous prime is 228031229. The next prime is 228031247. The reversal of 228031232 is 232130822.

228031232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 228031198 and 228031207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33494 + ... + 39722.

Almost surely, 2^228031232 is an apocalyptic number.

228031232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267416520).

228031232 is an abundant number, since it is smaller than the sum of its proper divisors (306801808).

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

228031232 is a wasteful number, since it uses less digits than its factorization.

228031232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269 (or 6255 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 228031232 is about 15100.7030299917. The cubic root of 228031232 is about 610.9393678734.

The spelling of 228031232 in words is "two hundred twenty-eight million, thirty-one thousand, two hundred thirty-two".