16400324 has 12 divisors (see below), whose sum is σ = 29476524. Its totient is φ = 7978464.

The previous prime is 16400317. The next prime is 16400347. The reversal of 16400324 is 42300461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10240000 + 6160324 = 3200^2 + 2482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16400296 and 16400305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55259 + ... + 55554.

It is an arithmetic number, because the mean of its divisors is an integer number (2456377).

Almost surely, 2^16400324 is an apocalyptic number.

It is an amenable number.

16400324 is a deficient number, since it is larger than the sum of its proper divisors (13076200).

16400324 is a wasteful number, since it uses less digits than its factorization.

16400324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110854 (or 110852 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 16400324 is about 4049.7313491144. The cubic root of 16400324 is about 254.0684916664.

Adding to 16400324 its reverse (42300461), we get a palindrome (58700785).

The spelling of 16400324 in words is "sixteen million, four hundred thousand, three hundred twenty-four".