228012224 has 56 divisors (see below), whose sum is σ = 496872768. Its totient is φ = 102954240.

The previous prime is 228012203. The next prime is 228012227. The reversal of 228012224 is 422210822.

It is a self number, because there is not a number n which added to its sum of digits gives 228012224.

It is not an unprimeable number, because it can be changed into a prime (228012227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113759 + ... + 115745.

It is an arithmetic number, because the mean of its divisors is an integer number (8872728).

Almost surely, 2^228012224 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 228012224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248436384).

228012224 is an abundant number, since it is smaller than the sum of its proper divisors (268860544).

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

228012224 is a wasteful number, since it uses less digits than its factorization.

228012224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 228012224 is about 15100.0736422045. The cubic root of 228012224 is about 610.9223920436.

The spelling of 228012224 in words is "two hundred twenty-eight million, twelve thousand, two hundred twenty-four".