16043664 has 80 divisors (see below), whose sum is σ = 51024512. Its totient is φ = 4230144.

The previous prime is 16043663. The next prime is 16043689. The reversal of 16043664 is 46634061.

16043664 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 (16043663) 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, 2532 + ... + 6204.

Almost surely, 2^16043664 is an apocalyptic number.

16043664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16043664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25512256).

16043664 is an abundant number, since it is smaller than the sum of its proper divisors (34980848).

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

16043664 is a wasteful number, since it uses less digits than its factorization.

16043664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704 (or 3698 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 16043664 is about 4005.4542813519. The cubic root of 16043664 is about 252.2132234156.

The spelling of 16043664 in words is "sixteen million, forty-three thousand, six hundred sixty-four".