228523664 has 20 divisors (see below), whose sum is σ = 443057580. Its totient is φ = 114186240.

The previous prime is 228523663. The next prime is 228523721. The reversal of 228523664 is 466325822.

228523664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 81144064 + 147379600 = 9008^2 + 12140^2 .

It is not an unprimeable number, because it can be changed into a prime (228523663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26444 + ... + 34004.

It is an arithmetic number, because the mean of its divisors is an integer number (22152879).

Almost surely, 2^228523664 is an apocalyptic number.

It is an amenable number.

228523664 is a deficient number, since it is larger than the sum of its proper divisors (214533916).

228523664 is a wasteful number, since it uses less digits than its factorization.

228523664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9458 (or 9452 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 228523664 is about 15116.9991731163. Note that the first 3 decimals coincide. The cubic root of 228523664 is about 611.3788249209.

The spelling of 228523664 in words is "two hundred twenty-eight million, five hundred twenty-three thousand, six hundred sixty-four".