16091328 has 112 divisors (see below), whose sum is σ = 49011840. Its totient is φ = 4608000.

The previous prime is 16091321. The next prime is 16091353. The reversal of 16091328 is 82319061.

It is a junction number, because it is equal to n+sod(n) for n = 16091295 and 16091304.

It is not an unprimeable number, because it can be changed into a prime (16091321) 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, 39928 + ... + 40328.

Almost surely, 2^16091328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16091328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24505920).

16091328 is an abundant number, since it is smaller than the sum of its proper divisors (32920512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16091328 is a wasteful number, since it uses less digits than its factorization.

16091328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 16091328 is about 4011.3997556963. The cubic root of 16091328 is about 252.4627425994.

The spelling of 16091328 in words is "sixteen million, ninety-one thousand, three hundred twenty-eight".