19204238 has 4 divisors (see below), whose sum is σ = 28806360. Its totient is φ = 9602118.

The previous prime is 19204223. The next prime is 19204267. The reversal of 19204238 is 83240291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83240291 = 41 ⋅2030251.

It is a self number, because there is not a number n which added to its sum of digits gives 19204238.

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, 4801058 + ... + 4801061.

It is an arithmetic number, because the mean of its divisors is an integer number (7201590).

Almost surely, 2^19204238 is an apocalyptic number.

19204238 is a deficient number, since it is larger than the sum of its proper divisors (9602122).

19204238 is an equidigital number, since it uses as much as digits as its factorization.

19204238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602121.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 19204238 is about 4382.2640267332. The cubic root of 19204238 is about 267.7928803671.

The spelling of 19204238 in words is "nineteen million, two hundred four thousand, two hundred thirty-eight".