16689672 has 32 divisors (see below), whose sum is σ = 46360800. Its totient is φ = 5563152.

The previous prime is 16689649. The next prime is 16689683. The reversal of 16689672 is 27698661.

16689672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38418 + ... + 38849.

It is an arithmetic number, because the mean of its divisors is an integer number (1448775).

Almost surely, 2^16689672 is an apocalyptic number.

16689672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16689672 is an abundant number, since it is smaller than the sum of its proper divisors (29671128).

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

16689672 is a wasteful number, since it uses less digits than its factorization.

16689672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77282 (or 77272 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 16689672 is about 4085.2994994247. The cubic root of 16689672 is about 255.5539514567.

The spelling of 16689672 in words is "sixteen million, six hundred eighty-nine thousand, six hundred seventy-two".