16222418 has 8 divisors (see below), whose sum is σ = 24574860. Its totient is φ = 8030800.

The previous prime is 16222417. The next prime is 16222421. The reversal of 16222418 is 81422261.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12623809 + 3598609 = 3553^2 + 1897^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16222417) 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 3 ways as a sum of consecutive naturals, for example, 39953 + ... + 40356.

Almost surely, 2^16222418 is an apocalyptic number.

16222418 is a deficient number, since it is larger than the sum of its proper divisors (8352442).

16222418 is a wasteful number, since it uses less digits than its factorization.

16222418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80412.

The product of its digits is 1536, while the sum is 26.

The square root of 16222418 is about 4027.7062951511. The cubic root of 16222418 is about 253.1464622964.

Adding to 16222418 its reverse (81422261), we get a palindrome (97644679).

The spelling of 16222418 in words is "sixteen million, two hundred twenty-two thousand, four hundred eighteen".