222494278 has 8 divisors (see below), whose sum is σ = 334071360. Its totient is φ = 111137160.

The previous prime is 222494273. The next prime is 222494281. The reversal of 222494278 is 872494222.

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

It is a self number, because there is not a number n which added to its sum of digits gives 222494278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222494273) 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, 52438 + ... + 56521.

It is an arithmetic number, because the mean of its divisors is an integer number (41758920).

Almost surely, 2^222494278 is an apocalyptic number.

222494278 is a deficient number, since it is larger than the sum of its proper divisors (111577082).

222494278 is a wasteful number, since it uses less digits than its factorization.

222494278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109982.

The product of its digits is 129024, while the sum is 40.

The square root of 222494278 is about 14916.2420870674. The cubic root of 222494278 is about 605.9539425543.

The spelling of 222494278 in words is "two hundred twenty-two million, four hundred ninety-four thousand, two hundred seventy-eight".