222689378 has 8 divisors (see below), whose sum is σ = 334098768. Its totient is φ = 111323124.

The previous prime is 222689377. The next prime is 222689393. The reversal of 222689378 is 873986222.

222689378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222689371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10625 + ... + 23627.

It is an arithmetic number, because the mean of its divisors is an integer number (41762346).

Almost surely, 2^222689378 is an apocalyptic number.

222689378 is a deficient number, since it is larger than the sum of its proper divisors (111409390).

222689378 is a wasteful number, since it uses less digits than its factorization.

222689378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21568.

The product of its digits is 580608, while the sum is 47.

The square root of 222689378 is about 14922.7805049863. The cubic root of 222689378 is about 606.1310063973.

The spelling of 222689378 in words is "two hundred twenty-two million, six hundred eighty-nine thousand, three hundred seventy-eight".