222552738 has 64 divisors (see below), whose sum is σ = 543283200. Its totient is φ = 67217040.

The previous prime is 222552731. The next prime is 222552767. The reversal of 222552738 is 837255222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222552731) 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 31 ways as a sum of consecutive naturals, for example, 18883 + ... + 28313.

It is an arithmetic number, because the mean of its divisors is an integer number (8488800).

Almost surely, 2^222552738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222552738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271641600).

222552738 is an abundant number, since it is smaller than the sum of its proper divisors (320730462).

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

222552738 is a wasteful number, since it uses less digits than its factorization.

222552738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9484 (or 9478 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 222552738 is about 14918.2015672131. The cubic root of 222552738 is about 606.0070090357.

The spelling of 222552738 in words is "two hundred twenty-two million, five hundred fifty-two thousand, seven hundred thirty-eight".