228319538500 has 24 divisors (see below), whose sum is σ = 498649873176. Its totient is φ = 91327815200.

The previous prime is 228319538483. The next prime is 228319538521. The reversal of 228319538500 is 5835913822.

228319538500 is digitally balanced in base 2, 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 4 ways, for example, as 1878702336 + 226440836164 = 43344^2 + 475858^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228319039 + ... + 228320038.

It is an arithmetic number, because the mean of its divisors is an integer number (20777078049).

Almost surely, 2^228319538500 is an apocalyptic number.

228319538500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228319538500 is an abundant number, since it is smaller than the sum of its proper divisors (270330334676).

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

228319538500 is a wasteful number, since it uses less digits than its factorization.

228319538500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456639096 (or 456639084 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 228319538500 in words is "two hundred twenty-eight billion, three hundred nineteen million, five hundred thirty-eight thousand, five hundred".