228726591020 has 24 divisors (see below), whose sum is σ = 480334827168. Its totient is φ = 91488924800.

The previous prime is 228726591017. The next prime is 228726591043. The reversal of 228726591020 is 20195627822.

228726591020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 2029760 + ... + 2139480.

It is an arithmetic number, because the mean of its divisors is an integer number (20013951132).

Almost surely, 2^228726591020 is an apocalyptic number.

228726591020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228726591020 is an abundant number, since it is smaller than the sum of its proper divisors (251608236148).

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

228726591020 is a wasteful number, since it uses less digits than its factorization.

228726591020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213961 (or 213959 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 228726591020 in words is "two hundred twenty-eight billion, seven hundred twenty-six million, five hundred ninety-one thousand, twenty".