222447156 has 12 divisors (see below), whose sum is σ = 519043392. Its totient is φ = 74149048.

The previous prime is 222447119. The next prime is 222447163. The reversal of 222447156 is 651744222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9268620 + ... + 9268643.

It is an arithmetic number, because the mean of its divisors is an integer number (43253616).

Almost surely, 2^222447156 is an apocalyptic number.

It is an amenable number.

222447156 is an abundant number, since it is smaller than the sum of its proper divisors (296596236).

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

222447156 is a wasteful number, since it uses less digits than its factorization.

222447156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18537270 (or 18537268 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 222447156 is about 14914.6624500858. The cubic root of 222447156 is about 605.9111612627.

The spelling of 222447156 in words is "two hundred twenty-two million, four hundred forty-seven thousand, one hundred fifty-six".