19828228 has 24 divisors (see below), whose sum is σ = 41025600. Its totient is φ = 8204448.

The previous prime is 19828217. The next prime is 19828253. The reversal of 19828228 is 82282891.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 11398 + ... + 13021.

It is an arithmetic number, because the mean of its divisors is an integer number (1709400).

Almost surely, 2^19828228 is an apocalyptic number.

It is an amenable number.

19828228 is an abundant number, since it is smaller than the sum of its proper divisors (21197372).

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

19828228 is a wasteful number, since it uses less digits than its factorization.

19828228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24459 (or 24457 counting only the distinct ones).

The product of its digits is 36864, while the sum is 40.

The square root of 19828228 is about 4452.8898481772. The cubic root of 19828228 is about 270.6624246735.

The spelling of 19828228 in words is "nineteen million, eight hundred twenty-eight thousand, two hundred twenty-eight".