16320506 has 8 divisors (see below), whose sum is σ = 25769280. Its totient is φ = 7730748.

The previous prime is 16320481. The next prime is 16320517. The reversal of 16320506 is 60502361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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, 214706 + ... + 214781.

It is an arithmetic number, because the mean of its divisors is an integer number (3221160).

Almost surely, 2^16320506 is an apocalyptic number.

16320506 is a deficient number, since it is larger than the sum of its proper divisors (9448774).

16320506 is a wasteful number, since it uses less digits than its factorization.

16320506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429508.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 16320506 is about 4039.8646016915. The cubic root of 16320506 is about 253.6556496841.

Adding to 16320506 its reverse (60502361), we get a palindrome (76822867).

The spelling of 16320506 in words is "sixteen million, three hundred twenty thousand, five hundred six".