16890448 has 20 divisors (see below), whose sum is σ = 33175828. Its totient is φ = 8328960.

The previous prime is 16890439. The next prime is 16890451. The reversal of 16890448 is 84409861.

It can be written as a sum of positive squares in 2 ways, for example, as 4443664 + 12446784 = 2108^2 + 3528^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16890448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6063 + ... + 8398.

Almost surely, 2^16890448 is an apocalyptic number.

It is an amenable number.

16890448 is a deficient number, since it is larger than the sum of its proper divisors (16285380).

16890448 is a wasteful number, since it uses less digits than its factorization.

16890448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14542 (or 14536 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 16890448 is about 4109.7990218501. The cubic root of 16890448 is about 256.5746368960.

The spelling of 16890448 in words is "sixteen million, eight hundred ninety thousand, four hundred forty-eight".