222641772 has 48 divisors (see below), whose sum is σ = 552531840. Its totient is φ = 69576192.

The previous prime is 222641761. The next prime is 222641803. The reversal of 222641772 is 277146222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17083 + ... + 27149.

It is an arithmetic number, because the mean of its divisors is an integer number (11511080).

Almost surely, 2^222641772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222641772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276265920).

222641772 is an abundant number, since it is smaller than the sum of its proper divisors (329890068).

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

222641772 is a wasteful number, since it uses less digits than its factorization.

222641772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10190 (or 10188 counting only the distinct ones).

The product of its digits is 18816, while the sum is 33.

The square root of 222641772 is about 14921.1853416543. The cubic root of 222641772 is about 606.0878109092.

Adding to 222641772 its reverse (277146222), we get a palindrome (499787994).

The spelling of 222641772 in words is "two hundred twenty-two million, six hundred forty-one thousand, seven hundred seventy-two".