22209722 has 8 divisors (see below), whose sum is σ = 33372000. Its totient is φ = 11085724.

The previous prime is 22209713. The next prime is 22209749. The reversal of 22209722 is 22790222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22209691 and 22209700.

It is an unprimeable number.

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, 8072 + ... + 10467.

It is an arithmetic number, because the mean of its divisors is an integer number (4171500).

Almost surely, 2^22209722 is an apocalyptic number.

22209722 is a deficient number, since it is larger than the sum of its proper divisors (11162278).

22209722 is a wasteful number, since it uses less digits than its factorization.

22209722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19140.

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

The square root of 22209722 is about 4712.7191726221. The cubic root of 22209722 is about 281.0914964011.

Adding to 22209722 its reverse (22790222), we get a palindrome (44999944).

The spelling of 22209722 in words is "twenty-two million, two hundred nine thousand, seven hundred twenty-two".