222552378 has 12 divisors (see below), whose sum is σ = 482196858. Its totient is φ = 74184120.

The previous prime is 222552361. The next prime is 222552397. The reversal of 222552378 is 873255222.

It is a happy number.

222552378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 135559449 + 86992929 = 11643^2 + 9327^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6181993 + ... + 6182028.

Almost surely, 2^222552378 is an apocalyptic number.

222552378 is an abundant number, since it is smaller than the sum of its proper divisors (259644480).

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

222552378 is a wasteful number, since it uses less digits than its factorization.

222552378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12364029 (or 12364026 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 222552378 is about 14918.1895014107. The cubic root of 222552378 is about 606.0066822777.

The spelling of 222552378 in words is "two hundred twenty-two million, five hundred fifty-two thousand, three hundred seventy-eight".