228144868 has 24 divisors (see below), whose sum is σ = 462720384. Its totient is φ = 96398400.

The previous prime is 228144857. The next prime is 228144871. The reversal of 228144868 is 868441822.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55393 + ... + 59368.

It is an arithmetic number, because the mean of its divisors is an integer number (19280016).

Almost surely, 2^228144868 is an apocalyptic number.

228144868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228144868 is an abundant number, since it is smaller than the sum of its proper divisors (234575516).

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

228144868 is a wasteful number, since it uses less digits than its factorization.

228144868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114843 (or 114841 counting only the distinct ones).

The product of its digits is 196608, while the sum is 43.

The square root of 228144868 is about 15104.4651676251. The cubic root of 228144868 is about 611.0408352270.

The spelling of 228144868 in words is "two hundred twenty-eight million, one hundred forty-four thousand, eight hundred sixty-eight".