22240361 has 32 divisors (see below), whose sum is σ = 28062720. Its totient is φ = 17337600.

The previous prime is 22240349. The next prime is 22240363. The reversal of 22240361 is 16304222.

It is a cyclic number.

It is not a de Polignac number, because 22240361 - 2¹⁰ = 22239337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22240363) 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 31 ways as a sum of consecutive naturals, for example, 128471 + ... + 128643.

It is an arithmetic number, because the mean of its divisors is an integer number (876960).

Almost surely, 2^22240361 is an apocalyptic number.

It is an amenable number.

22240361 is a deficient number, since it is larger than the sum of its proper divisors (5822359).

22240361 is a wasteful number, since it uses less digits than its factorization.

22240361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22240361 is about 4715.9687233908. The cubic root of 22240361 is about 281.2206951524.

Adding to 22240361 its reverse (16304222), we get a palindrome (38544583).

The spelling of 22240361 in words is "twenty-two million, two hundred forty thousand, three hundred sixty-one".