222428678 has 4 divisors (see below), whose sum is σ = 333643020. Its totient is φ = 111214338.

The previous prime is 222428639. The next prime is 222428683. The reversal of 222428678 is 876824222.

222428678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55607168 + ... + 55607171.

It is an arithmetic number, because the mean of its divisors is an integer number (83410755).

Almost surely, 2^222428678 is an apocalyptic number.

222428678 is a deficient number, since it is larger than the sum of its proper divisors (111214342).

222428678 is a wasteful number, since it uses less digits than its factorization.

222428678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111214341.

The product of its digits is 172032, while the sum is 41.

The square root of 222428678 is about 14914.0429796886. The cubic root of 222428678 is about 605.8943837403.

The spelling of 222428678 in words is "two hundred twenty-two million, four hundred twenty-eight thousand, six hundred seventy-eight".