16806393 has 24 divisors (see below), whose sum is σ = 26354400. Its totient is φ = 10555920.

The previous prime is 16806373. The next prime is 16806403. The reversal of 16806393 is 39360861.

It is a happy number.

16806393 is a `hidden beast` number, since 16 + 8 + 0 + 639 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-16806393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16806323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92763 + ... + 92943.

It is an arithmetic number, because the mean of its divisors is an integer number (1098100).

Almost surely, 2^16806393 is an apocalyptic number.

It is an amenable number.

16806393 is a deficient number, since it is larger than the sum of its proper divisors (9548007).

16806393 is an equidigital number, since it uses as much as digits as its factorization.

16806393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 16806393 is about 4099.5600983520. The cubic root of 16806393 is about 256.1483159514.

The spelling of 16806393 in words is "sixteen million, eight hundred six thousand, three hundred ninety-three".