228137888 has 24 divisors (see below), whose sum is σ = 489978720. Its totient is φ = 103698880.

The previous prime is 228137887. The next prime is 228137933. The reversal of 228137888 is 888731822.

228137888 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×228137888² = 104093791882201088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228137887) 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 3 ways as a sum of consecutive naturals, for example, 323708 + ... + 324411.

It is an arithmetic number, because the mean of its divisors is an integer number (20415780).

Almost surely, 2^228137888 is an apocalyptic number.

It is an amenable number.

228137888 is an abundant number, since it is smaller than the sum of its proper divisors (261840832).

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

228137888 is a wasteful number, since it uses less digits than its factorization.

228137888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648140 (or 648132 counting only the distinct ones).

The product of its digits is 344064, while the sum is 47.

The square root of 228137888 is about 15104.2341083552. The cubic root of 228137888 is about 611.0346036477.

The spelling of 228137888 in words is "two hundred twenty-eight million, one hundred thirty-seven thousand, eight hundred eighty-eight".