16327491 has 8 divisors (see below), whose sum is σ = 21801984. Its totient is φ = 10869000.

The previous prime is 16327489. The next prime is 16327499. The reversal of 16327491 is 19472361.

16327491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16327491 - 2¹ = 16327489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16327499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1371 + ... + 5876.

It is an arithmetic number, because the mean of its divisors is an integer number (2725248).

Almost surely, 2^16327491 is an apocalyptic number.

16327491 is a deficient number, since it is larger than the sum of its proper divisors (5474493).

16327491 is an equidigital number, since it uses as much as digits as its factorization.

16327491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001.

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

The square root of 16327491 is about 4040.7290183827. The cubic root of 16327491 is about 253.6918318140.

The spelling of 16327491 in words is "sixteen million, three hundred twenty-seven thousand, four hundred ninety-one".