220538124728 has 32 divisors (see below), whose sum is σ = 419576371200. Its totient is φ = 108656647008.

The previous prime is 220538124727. The next prime is 220538124731. The reversal of 220538124728 is 827421835022.

220538124728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220538124727) by changing a digit.

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, 28976 + ... + 664767.

It is an arithmetic number, because the mean of its divisors is an integer number (13111761600).

Almost surely, 2^220538124728 is an apocalyptic number.

It is an amenable number.

220538124728 is a deficient number, since it is larger than the sum of its proper divisors (199038246472).

220538124728 is a wasteful number, since it uses less digits than its factorization.

220538124728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694331 (or 694327 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 220538124728 in words is "two hundred twenty billion, five hundred thirty-eight million, one hundred twenty-four thousand, seven hundred twenty-eight".