37218222 has 12 divisors (see below), whose sum is σ = 80639520. Its totient is φ = 12406068.

The previous prime is 37218199. The next prime is 37218229. The reversal of 37218222 is 22281273.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37218229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1033822 + ... + 1033857.

It is an arithmetic number, because the mean of its divisors is an integer number (6719960).

Almost surely, 2^37218222 is an apocalyptic number.

37218222 is an abundant number, since it is smaller than the sum of its proper divisors (43421298).

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

37218222 is a wasteful number, since it uses less digits than its factorization.

37218222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067687 (or 2067684 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 37218222 is about 6100.6738972018. The cubic root of 37218222 is about 333.8760042676.

Adding to 37218222 its reverse (22281273), we get a palindrome (59499495).

The spelling of 37218222 in words is "thirty-seven million, two hundred eighteen thousand, two hundred twenty-two".