16591116 has 48 divisors (see below), whose sum is σ = 41319936. Its totient is φ = 5163264.

The previous prime is 16591097. The next prime is 16591117. The reversal of 16591116 is 61119561.

16591116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16591117) 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, 33825 + ... + 34311.

It is an arithmetic number, because the mean of its divisors is an integer number (860832).

Almost surely, 2^16591116 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 16591116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20659968).

16591116 is an abundant number, since it is smaller than the sum of its proper divisors (24728820).

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

16591116 is a wasteful number, since it uses less digits than its factorization.

16591116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 676 counting only the distinct ones).

The product of its digits is 1620, while the sum is 30.

The square root of 16591116 is about 4073.2193655633. The cubic root of 16591116 is about 255.0499248654.

It can be divided in two parts, 1659 and 1116, that added together give a triangular number (2775 = T₇₄).

The spelling of 16591116 in words is "sixteen million, five hundred ninety-one thousand, one hundred sixteen".