16328689 has 16 divisors (see below), whose sum is σ = 18571392. Its totient is φ = 14243328.

The previous prime is 16328681. The next prime is 16328699. The reversal of 16328689 is 98682361.

It is a cyclic number.

It is not a de Polignac number, because 16328689 - 2³ = 16328681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16328681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28722 + ... + 29284.

It is an arithmetic number, because the mean of its divisors is an integer number (1160712).

Almost surely, 2^16328689 is an apocalyptic number.

It is an amenable number.

16328689 is a deficient number, since it is larger than the sum of its proper divisors (2242703).

16328689 is a wasteful number, since it uses less digits than its factorization.

16328689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696.

The product of its digits is 124416, while the sum is 43.

The square root of 16328689 is about 4040.8772562403. The cubic root of 16328689 is about 253.6980363880.

The spelling of 16328689 in words is "sixteen million, three hundred twenty-eight thousand, six hundred eighty-nine".