16404322 has 16 divisors (see below), whose sum is σ = 26906400. Its totient is φ = 7439040.

The previous prime is 16404307. The next prime is 16404329. The reversal of 16404322 is 22340461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 16404293 and 16404302.

It is not an unprimeable number, because it can be changed into a prime (16404329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15754 + ... + 16762.

It is an arithmetic number, because the mean of its divisors is an integer number (1681650).

Almost surely, 2^16404322 is an apocalyptic number.

16404322 is a deficient number, since it is larger than the sum of its proper divisors (10502078).

16404322 is a wasteful number, since it uses less digits than its factorization.

16404322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 16404322 is about 4050.2249320254. The cubic root of 16404322 is about 254.0891352281.

Adding to 16404322 its reverse (22340461), we get a palindrome (38744783).

The spelling of 16404322 in words is "sixteen million, four hundred four thousand, three hundred twenty-two".