222245778 has 16 divisors (see below), whose sum is σ = 448808256. Its totient is φ = 73362480.

The previous prime is 222245701. The next prime is 222245819. The reversal of 222245778 is 877542222.

It is a happy number.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179193 + ... + 180428.

It is an arithmetic number, because the mean of its divisors is an integer number (28050516).

Almost surely, 2^222245778 is an apocalyptic number.

222245778 is an abundant number, since it is smaller than the sum of its proper divisors (226562478).

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

222245778 is a wasteful number, since it uses less digits than its factorization.

222245778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359729.

The product of its digits is 125440, while the sum is 39.

The square root of 222245778 is about 14907.9099138679. The cubic root of 222245778 is about 605.7282653657.

The spelling of 222245778 in words is "two hundred twenty-two million, two hundred forty-five thousand, seven hundred seventy-eight".