16647672 has 32 divisors (see below), whose sum is σ = 41760000. Its totient is φ = 5530464.

The previous prime is 16647647. The next prime is 16647703. The reversal of 16647672 is 27674661.

It is a self number, because there is not a number n which added to its sum of digits gives 16647672.

It is a congruent number.

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, 7329 + ... + 9327.

It is an arithmetic number, because the mean of its divisors is an integer number (1305000).

Almost surely, 2^16647672 is an apocalyptic number.

16647672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16647672 is an abundant number, since it is smaller than the sum of its proper divisors (25112328).

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

16647672 is a wasteful number, since it uses less digits than its factorization.

16647672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355 (or 2351 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 16647672 is about 4080.1558793752. The cubic root of 16647672 is about 255.3394019620.

The spelling of 16647672 in words is "sixteen million, six hundred forty-seven thousand, six hundred seventy-two".