16404324 has 12 divisors (see below), whose sum is σ = 38276784. Its totient is φ = 5468104.

The previous prime is 16404307. The next prime is 16404329. The reversal of 16404324 is 42340461.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 16404294 and 16404303.

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 3 ways as a sum of consecutive naturals, for example, 683502 + ... + 683525.

It is an arithmetic number, because the mean of its divisors is an integer number (3189732).

Almost surely, 2^16404324 is an apocalyptic number.

It is an amenable number.

16404324 is an abundant number, since it is smaller than the sum of its proper divisors (21872460).

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

16404324 is a wasteful number, since it uses less digits than its factorization.

16404324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367034 (or 1367032 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 16404324 is about 4050.2251789252. The cubic root of 16404324 is about 254.0891455542.

Adding to 16404324 its reverse (42340461), we get a palindrome (58744785).

The spelling of 16404324 in words is "sixteen million, four hundred four thousand, three hundred twenty-four".