16491327 has 8 divisors (see below), whose sum is σ = 22029360. Its totient is φ = 10973760.

The previous prime is 16491311. The next prime is 16491337. The reversal of 16491327 is 72319461.

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

It is not a de Polignac number, because 16491327 - 2⁴ = 16491311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16491337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3124 + ... + 6537.

It is an arithmetic number, because the mean of its divisors is an integer number (2753670).

Almost surely, 2^16491327 is an apocalyptic number.

16491327 is a deficient number, since it is larger than the sum of its proper divisors (5538033).

16491327 is an equidigital number, since it uses as much as digits as its factorization.

16491327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233.

The product of its digits is 9072, while the sum is 33.

The square root of 16491327 is about 4060.9514894911. The cubic root of 16491327 is about 254.5375547834.

The spelling of 16491327 in words is "sixteen million, four hundred ninety-one thousand, three hundred twenty-seven".