16320791 has 4 divisors (see below), whose sum is σ = 17179800. Its totient is φ = 15461784.

The previous prime is 16320781. The next prime is 16320803. The reversal of 16320791 is 19702361.

16320791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16320791 - 2⁶ = 16320727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16320721) 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, 429476 + ... + 429513.

It is an arithmetic number, because the mean of its divisors is an integer number (4294950).

Almost surely, 2^16320791 is an apocalyptic number.

16320791 is a deficient number, since it is larger than the sum of its proper divisors (859009).

16320791 is an equidigital number, since it uses as much as digits as its factorization.

16320791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859008.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 16320791 is about 4039.8998749969. The cubic root of 16320791 is about 253.6571261791.

The spelling of 16320791 in words is "sixteen million, three hundred twenty thousand, seven hundred ninety-one".