222446772 has 36 divisors (see below), whose sum is σ = 564241860. Its totient is φ = 73892352.

The previous prime is 222446761. The next prime is 222446801. The reversal of 222446772 is 277644222.

It can be written as a sum of positive squares in 2 ways, for example, as 215913636 + 6533136 = 14694^2 + 2556^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 4 + ... + 21092.

It is an arithmetic number, because the mean of its divisors is an integer number (15673385).

Almost surely, 2^222446772 is an apocalyptic number.

It is an amenable number.

222446772 is an abundant number, since it is smaller than the sum of its proper divisors (341795088).

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

222446772 is a wasteful number, since it uses less digits than its factorization.

222446772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21392 (or 21387 counting only the distinct ones).

The product of its digits is 75264, while the sum is 36.

The square root of 222446772 is about 14914.6495768422. The cubic root of 222446772 is about 605.9108126106.

The spelling of 222446772 in words is "two hundred twenty-two million, four hundred forty-six thousand, seven hundred seventy-two".