22215652 has 12 divisors (see below), whose sum is σ = 39410476. Its totient is φ = 10955520.

The previous prime is 22215629. The next prime is 22215667. The reversal of 22215652 is 25651222.

It is a happy number.

22215652 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 5125696 + 17089956 = 2264^2 + 4134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37749 + ... + 38332.

Almost surely, 2^22215652 is an apocalyptic number.

It is an amenable number.

22215652 is a deficient number, since it is larger than the sum of its proper divisors (17194824).

22215652 is a wasteful number, since it uses less digits than its factorization.

22215652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76158 (or 76156 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 22215652 is about 4713.3482790899. The cubic root of 22215652 is about 281.1165113359.

Adding to 22215652 its reverse (25651222), we get a palindrome (47866874).

The spelling of 22215652 in words is "twenty-two million, two hundred fifteen thousand, six hundred fifty-two".