16664448 has 32 divisors (see below), whose sum is σ = 44265960. Its totient is φ = 5554688.

The previous prime is 16664447. The next prime is 16664477. The reversal of 16664448 is 84446661.

16664448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16664447) 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, 21315 + ... + 22082.

Almost surely, 2^16664448 is an apocalyptic number.

It is an amenable number.

16664448 is an abundant number, since it is smaller than the sum of its proper divisors (27601512).

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

16664448 is an equidigital number, since it uses as much as digits as its factorization.

16664448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43414 (or 43402 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 16664448 is about 4082.2111655327. The cubic root of 16664448 is about 255.4251423936.

The spelling of 16664448 in words is "sixteen million, six hundred sixty-four thousand, four hundred forty-eight".