228796728538 has 8 divisors (see below), whose sum is σ = 392222963232. Its totient is φ = 98055740796.

The previous prime is 228796728509. The next prime is 228796728607. The reversal of 228796728538 is 835827697822.

228796728538 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 8171311720 + ... + 8171311747.

It is an arithmetic number, because the mean of its divisors is an integer number (49027870404).

Almost surely, 2^228796728538 is an apocalyptic number.

228796728538 is a deficient number, since it is larger than the sum of its proper divisors (163426234694).

228796728538 is a wasteful number, since it uses less digits than its factorization.

228796728538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16342623476.

The product of its digits is 162570240, while the sum is 67.

The spelling of 228796728538 in words is "two hundred twenty-eight billion, seven hundred ninety-six million, seven hundred twenty-eight thousand, five hundred thirty-eight".