16404222 has 16 divisors (see below), whose sum is σ = 33507072. Its totient is φ = 5351640.

The previous prime is 16404197. The next prime is 16404229. The reversal of 16404222 is 22240461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28804 + ... + 29367.

It is an arithmetic number, because the mean of its divisors is an integer number (2094192).

Almost surely, 2^16404222 is an apocalyptic number.

16404222 is an abundant number, since it is smaller than the sum of its proper divisors (17102850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16404222 is a wasteful number, since it uses less digits than its factorization.

16404222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58223.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 16404222 is about 4050.2125870132. The cubic root of 16404222 is about 254.0886189218.

Adding to 16404222 its reverse (22240461), we get a palindrome (38644683).

The spelling of 16404222 in words is "sixteen million, four hundred four thousand, two hundred twenty-two".