19138328 has 48 divisors (see below), whose sum is σ = 41799240. Its totient is φ = 8180480.

The previous prime is 19138313. The next prime is 19138373. The reversal of 19138328 is 82383191.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15875 + ... + 17037.

Almost surely, 2^19138328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19138328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20899620).

19138328 is an abundant number, since it is smaller than the sum of its proper divisors (22660912).

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

19138328 is a wasteful number, since it uses less digits than its factorization.

19138328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 1193 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 19138328 is about 4374.7374778380. The cubic root of 19138328 is about 267.4861692561.

The spelling of 19138328 in words is "nineteen million, one hundred thirty-eight thousand, three hundred twenty-eight".