16645132 has 12 divisors (see below), whose sum is σ = 33290320. Its totient is φ = 7133616.

The previous prime is 16645129. The next prime is 16645133. The reversal of 16645132 is 23154661.

16645132 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 594469 = 16645132 / (1 + 6 + 6 + 4 + 5 + 1 + 3 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 16645132.

It is not an unprimeable number, because it can be changed into a prime (16645133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297207 + ... + 297262.

Almost surely, 2^16645132 is an apocalyptic number.

It is an amenable number.

16645132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16645132 is a wasteful number, since it uses less digits than its factorization.

16645132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594480 (or 594478 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 16645132 is about 4079.8446048839. The cubic root of 16645132 is about 255.3264152599.

Adding to 16645132 its reverse (23154661), we get a palindrome (39799793).

The spelling of 16645132 in words is "sixteen million, six hundred forty-five thousand, one hundred thirty-two".