228021798050 has 18 divisors (see below), whose sum is σ = 424126824849. Its totient is φ = 91207368600.

The previous prime is 228021798023. The next prime is 228021798071. The reversal of 228021798050 is 50897120822.

It can be written as a sum of positive squares in 2 ways, for example, as 223461362089 + 4560435961 = 472717^2 + 67531^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337655.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228021797992 and 228021798010.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3342785 + ... + 3410315.

Almost surely, 2^228021798050 is an apocalyptic number.

228021798050 is a deficient number, since it is larger than the sum of its proper divisors (196105026799).

228021798050 is an frugal number, since it uses more digits than its factorization.

228021798050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135074 (or 67538 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 228021798050 in words is "two hundred twenty-eight billion, twenty-one million, seven hundred ninety-eight thousand, fifty".