16685228 has 24 divisors (see below), whose sum is σ = 35334432. Its totient is φ = 6729984.

The previous prime is 16685197. The next prime is 16685231. The reversal of 16685228 is 82258661.

It is a junction number, because it is equal to n+sod(n) for n = 16685191 and 16685200.

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, 17051 + ... + 18002.

It is an arithmetic number, because the mean of its divisors is an integer number (1472268).

Almost surely, 2^16685228 is an apocalyptic number.

It is an amenable number.

16685228 is an abundant number, since it is smaller than the sum of its proper divisors (18649204).

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

16685228 is a wasteful number, since it uses less digits than its factorization.

16685228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35081 (or 35079 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 16685228 is about 4084.7555618421. The cubic root of 16685228 is about 255.5312671168.

The spelling of 16685228 in words is "sixteen million, six hundred eighty-five thousand, two hundred twenty-eight".