22152204 has 30 divisors (see below), whose sum is σ = 57911084. Its totient is φ = 7383960.

The previous prime is 22152187. The next prime is 22152209. The reversal of 22152204 is 40225122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22152209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 33862 + ... + 34509.

Almost surely, 2^22152204 is an apocalyptic number.

It is an amenable number.

22152204 is an abundant number, since it is smaller than the sum of its proper divisors (35758880).

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

22152204 is a wasteful number, since it uses less digits than its factorization.

22152204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68387 (or 68376 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22152204 is about 4706.6127947814. The cubic root of 22152204 is about 280.8486328214.

Adding to 22152204 its reverse (40225122), we get a palindrome (62377326).

It can be divided in two parts, 221 and 52204, that added together give a palindrome (52425).

The spelling of 22152204 in words is "twenty-two million, one hundred fifty-two thousand, two hundred four".