19270228 has 12 divisors (see below), whose sum is σ = 35189280. Its totient is φ = 9216152.

The previous prime is 19270213. The next prime is 19270241. The reversal of 19270228 is 82207291.

It is a self number, because there is not a number n which added to its sum of digits gives 19270228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104638 + ... + 104821.

It is an arithmetic number, because the mean of its divisors is an integer number (2932440).

Almost surely, 2^19270228 is an apocalyptic number.

It is an amenable number.

19270228 is a deficient number, since it is larger than the sum of its proper divisors (15919052).

19270228 is a wasteful number, since it uses less digits than its factorization.

19270228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209486 (or 209484 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 19270228 is about 4389.7867829771. The cubic root of 19270228 is about 268.0992615158.

The spelling of 19270228 in words is "nineteen million, two hundred seventy thousand, two hundred twenty-eight".