16219228 has 6 divisors (see below), whose sum is σ = 28383656. Its totient is φ = 8109612.

The previous prime is 16219211. The next prime is 16219289. The reversal of 16219228 is 82291261.

It is a self number, because there is not a number n which added to its sum of digits gives 16219228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2027400 + ... + 2027407.

Almost surely, 2^16219228 is an apocalyptic number.

It is an amenable number.

16219228 is a deficient number, since it is larger than the sum of its proper divisors (12164428).

16219228 is a wasteful number, since it uses less digits than its factorization.

16219228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054811 (or 4054809 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 16219228 is about 4027.3102686533. The cubic root of 16219228 is about 253.1298681785.

The spelling of 16219228 in words is "sixteen million, two hundred nineteen thousand, two hundred twenty-eight".