22522418 has 8 divisors (see below), whose sum is σ = 34696812. Its totient is φ = 10956816.

The previous prime is 22522363. The next prime is 22522427. The reversal of 22522418 is 81422522.

It can be written as a sum of positive squares in 2 ways, for example, as 17783089 + 4739329 = 4217^2 + 2177^2 .

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

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, 152105 + ... + 152252.

Almost surely, 2^22522418 is an apocalyptic number.

22522418 is a deficient number, since it is larger than the sum of its proper divisors (12174394).

22522418 is a wasteful number, since it uses less digits than its factorization.

22522418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304396.

The product of its digits is 2560, while the sum is 26.

The square root of 22522418 is about 4745.7789666187. The cubic root of 22522418 is about 282.4045381894.

The spelling of 22522418 in words is "twenty-two million, five hundred twenty-two thousand, four hundred eighteen".