228534432 has 144 divisors (see below), whose sum is σ = 734862240. Its totient is φ = 61834752.

The previous prime is 228534419. The next prime is 228534437. The reversal of 228534432 is 234435822.

It is a junction number, because it is equal to n+sod(n) for n = 228534393 and 228534402.

It is not an unprimeable number, because it can be changed into a prime (228534437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88098 + ... + 90654.

It is an arithmetic number, because the mean of its divisors is an integer number (5103210).

Almost surely, 2^228534432 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 228534432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367431120).

228534432 is an abundant number, since it is smaller than the sum of its proper divisors (506327808).

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

228534432 is a wasteful number, since it uses less digits than its factorization.

228534432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603 (or 2588 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 228534432 is about 15117.3553242622. The cubic root of 228534432 is about 611.3884274622.

The spelling of 228534432 in words is "two hundred twenty-eight million, five hundred thirty-four thousand, four hundred thirty-two".