19243228 has 6 divisors (see below), whose sum is σ = 33675656. Its totient is φ = 9621612.

The previous prime is 19243207. The next prime is 19243241. The reversal of 19243228 is 82234291.

It is a self number, because there is not a number n which added to its sum of digits gives 19243228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2405400 + ... + 2405407.

Almost surely, 2^19243228 is an apocalyptic number.

It is an amenable number.

19243228 is a deficient number, since it is larger than the sum of its proper divisors (14432428).

19243228 is a wasteful number, since it uses less digits than its factorization.

19243228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810811 (or 4810809 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 19243228 is about 4386.7103847872. The cubic root of 19243228 is about 267.9739894560.

The spelling of 19243228 in words is "nineteen million, two hundred forty-three thousand, two hundred twenty-eight".