222051844 has 24 divisors (see below), whose sum is σ = 463413888. Its totient is φ = 91027200.

The previous prime is 222051839. The next prime is 222051847. The reversal of 222051844 is 448150222.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (222051847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171757 + ... + 173044.

It is an arithmetic number, because the mean of its divisors is an integer number (19308912).

Almost surely, 2^222051844 is an apocalyptic number.

It is an amenable number.

222051844 is an abundant number, since it is smaller than the sum of its proper divisors (241362044).

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

222051844 is a wasteful number, since it uses less digits than its factorization.

222051844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344835 (or 344833 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 222051844 is about 14901.4040949167. The cubic root of 222051844 is about 605.5520258109.

The spelling of 222051844 in words is "two hundred twenty-two million, fifty-one thousand, eight hundred forty-four".