22418361 has 12 divisors (see below), whose sum is σ = 37008192. Its totient is φ = 12810456.

The previous prime is 22418339. The next prime is 22418377. The reversal of 22418361 is 16381422.

It is not a de Polignac number, because 22418361 - 2⁵ = 22418329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22418381) 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 11 ways as a sum of consecutive naturals, for example, 177861 + ... + 177986.

It is an arithmetic number, because the mean of its divisors is an integer number (3084016).

Almost surely, 2^22418361 is an apocalyptic number.

22418361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22418361 is a deficient number, since it is larger than the sum of its proper divisors (14589831).

22418361 is a wasteful number, since it uses less digits than its factorization.

22418361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355860 (or 355857 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 22418361 is about 4734.8031638073. The cubic root of 22418361 is about 281.9689493502.

Adding to 22418361 its reverse (16381422), we get a palindrome (38799783).

The spelling of 22418361 in words is "twenty-two million, four hundred eighteen thousand, three hundred sixty-one".