19888112 has 40 divisors (see below), whose sum is σ = 40271232. Its totient is φ = 9504000.

The previous prime is 19888111. The next prime is 19888177. The reversal of 19888112 is 21188891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19888111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49898 + ... + 50294.

Almost surely, 2^19888112 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 19888112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20135616).

19888112 is an abundant number, since it is smaller than the sum of its proper divisors (20383120).

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

19888112 is a wasteful number, since it uses less digits than its factorization.

19888112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 531 counting only the distinct ones).

The product of its digits is 9216, while the sum is 38.

The square root of 19888112 is about 4459.6089514665. The cubic root of 19888112 is about 270.9346301846.

The spelling of 19888112 in words is "nineteen million, eight hundred eighty-eight thousand, one hundred twelve".