22418005 has 8 divisors (see below), whose sum is σ = 28317600. Its totient is φ = 16990416.

The previous prime is 22418003. The next prime is 22418017. The reversal of 22418005 is 50081422.

22418005 is nontrivially palindromic in base 4.

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

It is a cyclic number.

It is not a de Polignac number, because 22418005 - 2¹ = 22418003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22418003) 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 in 7 ways as a sum of consecutive naturals, for example, 117895 + ... + 118084.

It is an arithmetic number, because the mean of its divisors is an integer number (3539700).

Almost surely, 2^22418005 is an apocalyptic number.

It is an amenable number.

22418005 is a deficient number, since it is larger than the sum of its proper divisors (5899595).

22418005 is a wasteful number, since it uses less digits than its factorization.

22418005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236003.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 22418005 is about 4734.7655696983. The cubic root of 22418005 is about 281.9674568016.

Adding to 22418005 its reverse (50081422), we get a palindrome (72499427).

The spelling of 22418005 in words is "twenty-two million, four hundred eighteen thousand, five".