16689448 has 32 divisors (see below), whose sum is σ = 33516000. Its totient is φ = 7767360.

The previous prime is 16689443. The next prime is 16689481. The reversal of 16689448 is 84498661.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16689398 and 16689407.

It is not an unprimeable number, because it can be changed into a prime (16689443) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 8038 + ... + 9898.

It is an arithmetic number, because the mean of its divisors is an integer number (1047375).

Almost surely, 2^16689448 is an apocalyptic number.

It is an amenable number.

16689448 is an abundant number, since it is smaller than the sum of its proper divisors (16826552).

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

16689448 is a wasteful number, since it uses less digits than its factorization.

16689448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1941 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 16689448 is about 4085.2720839621. The cubic root of 16689448 is about 255.5528081480.

The spelling of 16689448 in words is "sixteen million, six hundred eighty-nine thousand, four hundred forty-eight".