16628648 has 32 divisors (see below), whose sum is σ = 33888000. Its totient is φ = 7620480.

The previous prime is 16628641. The next prime is 16628653. The reversal of 16628648 is 84682661.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16628641) 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, 2948 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (1059000).

Almost surely, 2^16628648 is an apocalyptic number.

It is an amenable number.

16628648 is an abundant number, since it is smaller than the sum of its proper divisors (17259352).

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

16628648 is a wasteful number, since it uses less digits than its factorization.

16628648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585 (or 3581 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 16628648 is about 4077.8239294997. The cubic root of 16628648 is about 255.2421025062.

The spelling of 16628648 in words is "sixteen million, six hundred twenty-eight thousand, six hundred forty-eight".