16647648 has 48 divisors (see below), whose sum is σ = 46005120. Its totient is φ = 5256576.

The previous prime is 16647647. The next prime is 16647703. The reversal of 16647648 is 84674661.

16647648 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 (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16647647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2740 + ... + 6387.

It is an arithmetic number, because the mean of its divisors is an integer number (958440).

Almost surely, 2^16647648 is an apocalyptic number.

It is an amenable number.

16647648 is an abundant number, since it is smaller than the sum of its proper divisors (29357472).

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

16647648 is a wasteful number, since it uses less digits than its factorization.

16647648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9159 (or 9151 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 16647648 is about 4080.1529383100. The cubic root of 16647648 is about 255.3392792591.

The spelling of 16647648 in words is "sixteen million, six hundred forty-seven thousand, six hundred forty-eight".