16628216 has 16 divisors (see below), whose sum is σ = 34012440. Its totient is φ = 7558240.

The previous prime is 16628203. The next prime is 16628219. The reversal of 16628216 is 61282661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16628219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94391 + ... + 94566.

Almost surely, 2^16628216 is an apocalyptic number.

It is an amenable number.

16628216 is an abundant number, since it is smaller than the sum of its proper divisors (17384224).

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

16628216 is a wasteful number, since it uses less digits than its factorization.

16628216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188974 (or 188970 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 16628216 is about 4077.7709597279. The cubic root of 16628216 is about 255.2398921532.

It can be divided in two parts, 166 and 28216, that added together give a palindrome (28382).

The spelling of 16628216 in words is "sixteen million, six hundred twenty-eight thousand, two hundred sixteen".