16089728 has 32 divisors (see below), whose sum is σ = 32235060. Its totient is φ = 7999488.

The previous prime is 16089727. The next prime is 16089737. The reversal of 16089728 is 82798061.

It can be written as a sum of positive squares in 2 ways, for example, as 15936064 + 153664 = 3992^2 + 392^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×16089728² = 517758694227968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16089721) 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, 42950 + ... + 43322.

Almost surely, 2^16089728 is an apocalyptic number.

It is an amenable number.

16089728 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

16089728 is an equidigital number, since it uses as much as digits as its factorization.

16089728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 16089728 is about 4011.2003191065. The cubic root of 16089728 is about 252.4543746599.

The spelling of 16089728 in words is "sixteen million, eighty-nine thousand, seven hundred twenty-eight".