222538635428 has 24 divisors (see below), whose sum is σ = 393511005888. Its totient is φ = 110108498976.

The previous prime is 222538635419. The next prime is 222538635469. The reversal of 222538635428 is 824536835222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368975 + ... + 762377.

It is an arithmetic number, because the mean of its divisors is an integer number (16396291912).

Almost surely, 2^222538635428 is an apocalyptic number.

It is an amenable number.

222538635428 is a deficient number, since it is larger than the sum of its proper divisors (170972370460).

222538635428 is a wasteful number, since it uses less digits than its factorization.

222538635428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394883 (or 394881 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 50.

The spelling of 222538635428 in words is "two hundred twenty-two billion, five hundred thirty-eight million, six hundred thirty-five thousand, four hundred twenty-eight".