19442888 has 16 divisors (see below), whose sum is σ = 36516480. Its totient is φ = 9705168.

The previous prime is 19442881. The next prime is 19442939. The reversal of 19442888 is 88824491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19442881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4145 + ... + 7487.

It is an arithmetic number, because the mean of its divisors is an integer number (2282280).

Almost surely, 2^19442888 is an apocalyptic number.

It is an amenable number.

19442888 is a deficient number, since it is larger than the sum of its proper divisors (17073592).

19442888 is a wasteful number, since it uses less digits than its factorization.

19442888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076 (or 4072 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 19442888 is about 4409.4090306979. The cubic root of 19442888 is about 268.8975992544.

The spelling of 19442888 in words is "nineteen million, four hundred forty-two thousand, eight hundred eighty-eight".