22242764 has 18 divisors (see below), whose sum is σ = 39713940. Its totient is φ = 10897272.

The previous prime is 22242761. The next prime is 22242793. The reversal of 22242764 is 46724222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22242761) 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 5 ways as a sum of consecutive naturals, for example, 72299 + ... + 72605.

It is an arithmetic number, because the mean of its divisors is an integer number (2206330).

Almost surely, 2^22242764 is an apocalyptic number.

It is an amenable number.

22242764 is a deficient number, since it is larger than the sum of its proper divisors (17471176).

22242764 is an equidigital number, since it uses as much as digits as its factorization.

22242764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 368 counting only the distinct ones).

The product of its digits is 10752, while the sum is 29.

The square root of 22242764 is about 4716.2234891913. The cubic root of 22242764 is about 281.2308231204.

Adding to 22242764 its reverse (46724222), we get a palindrome (68966986).

The spelling of 22242764 in words is "twenty-two million, two hundred forty-two thousand, seven hundred sixty-four".