22842418 has 4 divisors (see below), whose sum is σ = 34263630. Its totient is φ = 11421208.

The previous prime is 22842397. The next prime is 22842419. The reversal of 22842418 is 81424822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18292729 + 4549689 = 4277^2 + 2133^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22842418.

It is not an unprimeable number, because it can be changed into a prime (22842419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710603 + ... + 5710606.

Almost surely, 2^22842418 is an apocalyptic number.

22842418 is a deficient number, since it is larger than the sum of its proper divisors (11421212).

22842418 is a wasteful number, since it uses less digits than its factorization.

22842418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421211.

The product of its digits is 8192, while the sum is 31.

The square root of 22842418 is about 4779.3742268209. The cubic root of 22842418 is about 283.7357275128.

The spelling of 22842418 in words is "twenty-two million, eight hundred forty-two thousand, four hundred eighteen".