222385378 has 4 divisors (see below), whose sum is σ = 333578070. Its totient is φ = 111192688.

The previous prime is 222385357. The next prime is 222385391. The reversal of 222385378 is 873583222.

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

It can be written as a sum of positive squares in only one way, i.e., 194686209 + 27699169 = 13953^2 + 5263^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 222385378.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55596343 + ... + 55596346.

Almost surely, 2^222385378 is an apocalyptic number.

222385378 is a deficient number, since it is larger than the sum of its proper divisors (111192692).

222385378 is a wasteful number, since it uses less digits than its factorization.

222385378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111192691.

The product of its digits is 161280, while the sum is 40.

The square root of 222385378 is about 14912.5912570552. The cubic root of 222385378 is about 605.8550648754.

The spelling of 222385378 in words is "two hundred twenty-two million, three hundred eighty-five thousand, three hundred seventy-eight".