16320428 has 24 divisors (see below), whose sum is σ = 29258544. Its totient is φ = 7963200.

The previous prime is 16320413. The next prime is 16320431. The reversal of 16320428 is 82402361.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16320397 and 16320406.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51326 + ... + 51642.

It is an arithmetic number, because the mean of its divisors is an integer number (1219106).

Almost surely, 2^16320428 is an apocalyptic number.

It is an amenable number.

16320428 is a deficient number, since it is larger than the sum of its proper divisors (12938116).

16320428 is a wasteful number, since it uses less digits than its factorization.

16320428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 16320428 is about 4039.8549478911. The cubic root of 16320428 is about 253.6552455877.

Adding to 16320428 its reverse (82402361), we get a palindrome (98722789).

The spelling of 16320428 in words is "sixteen million, three hundred twenty thousand, four hundred twenty-eight".