19438468 has 48 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 7814016.

The previous prime is 19438423. The next prime is 19438477. The reversal of 19438468 is 86483491.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29721 + ... + 30367.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^19438468 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 19438468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20684160).

19438468 is an abundant number, since it is smaller than the sum of its proper divisors (21929852).

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

19438468 is a wasteful number, since it uses less digits than its factorization.

19438468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 722 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 19438468 is about 4408.9078012587. The cubic root of 19438468 is about 268.8772213239.

The spelling of 19438468 in words is "nineteen million, four hundred thirty-eight thousand, four hundred sixty-eight".