19836228 has 48 divisors (see below), whose sum is σ = 49058240. Its totient is φ = 6238080.

The previous prime is 19836149. The next prime is 19836241. The reversal of 19836228 is 82263891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82188 + ... + 82428.

Almost surely, 2^19836228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19836228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24529120).

19836228 is an abundant number, since it is smaller than the sum of its proper divisors (29222012).

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

19836228 is a wasteful number, since it uses less digits than its factorization.

19836228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 265 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 19836228 is about 4453.7880506373. The cubic root of 19836228 is about 270.6988207357.

The spelling of 19836228 in words is "nineteen million, eight hundred thirty-six thousand, two hundred twenty-eight".