16445648 has 10 divisors (see below), whose sum is σ = 31863474. Its totient is φ = 8222816.

The previous prime is 16445623. The next prime is 16445677. The reversal of 16445648 is 84654461.

It can be written as a sum of positive squares in only one way, i.e., 14348944 + 2096704 = 3788^2 + 1448^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513911 + ... + 513942.

Almost surely, 2^16445648 is an apocalyptic number.

It is an amenable number.

16445648 is a deficient number, since it is larger than the sum of its proper divisors (15417826).

16445648 is a wasteful number, since it uses less digits than its factorization.

16445648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027861 (or 1027855 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 16445648 is about 4055.3234149695. The cubic root of 16445648 is about 254.3023246194.

The spelling of 16445648 in words is "sixteen million, four hundred forty-five thousand, six hundred forty-eight".