19104238 has 4 divisors (see below), whose sum is σ = 28656360. Its totient is φ = 9552118.

The previous prime is 19104233. The next prime is 19104257. The reversal of 19104238 is 83240191.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19104233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4776058 + ... + 4776061.

It is an arithmetic number, because the mean of its divisors is an integer number (7164090).

Almost surely, 2^19104238 is an apocalyptic number.

19104238 is a deficient number, since it is larger than the sum of its proper divisors (9552122).

19104238 is an equidigital number, since it uses as much as digits as its factorization.

19104238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9552121.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 19104238 is about 4370.8395074631. The cubic root of 19104238 is about 267.3272556348.

The spelling of 19104238 in words is "nineteen million, one hundred four thousand, two hundred thirty-eight".