228672288 has 96 divisors (see below), whose sum is σ = 718300800. Its totient is φ = 70357248.

The previous prime is 228672271. The next prime is 228672313. The reversal of 228672288 is 882276822.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1053 + ... + 21411.

It is an arithmetic number, because the mean of its divisors is an integer number (7482300).

Almost surely, 2^228672288 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 228672288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359150400).

228672288 is an abundant number, since it is smaller than the sum of its proper divisors (489628512).

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

228672288 is a wasteful number, since it uses less digits than its factorization.

228672288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20391 (or 20377 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 228672288 is about 15121.9141645494. The cubic root of 228672288 is about 611.5113361794.

The spelling of 228672288 in words is "two hundred twenty-eight million, six hundred seventy-two thousand, two hundred eighty-eight".