22209272 has 16 divisors (see below), whose sum is σ = 42048240. Its totient is φ = 10996416.

The previous prime is 22209251. The next prime is 22209277. The reversal of 22209272 is 27290222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22209277) 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 3 ways as a sum of consecutive naturals, for example, 12653 + ... + 14300.

It is an arithmetic number, because the mean of its divisors is an integer number (2628015).

Almost surely, 2^22209272 is an apocalyptic number.

It is an amenable number.

22209272 is a deficient number, since it is larger than the sum of its proper divisors (19838968).

22209272 is a wasteful number, since it uses less digits than its factorization.

22209272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27062 (or 27058 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22209272 is about 4712.6714292427. The cubic root of 22209272 is about 281.0895979528.

Adding to 22209272 its reverse (27290222), we get a palindrome (49499494).

The spelling of 22209272 in words is "twenty-two million, two hundred nine thousand, two hundred seventy-two".