19872888 has 64 divisors (see below), whose sum is σ = 58752000. Its totient is φ = 5480832.

The previous prime is 19872871. The next prime is 19872889. The reversal of 19872888 is 88827891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19872888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19872889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2833 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (918000).

Almost surely, 2^19872888 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 19872888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29376000).

19872888 is an abundant number, since it is smaller than the sum of its proper divisors (38879112).

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

19872888 is a wasteful number, since it uses less digits than its factorization.

19872888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124 (or 4120 counting only the distinct ones).

The product of its digits is 516096, while the sum is 51.

The square root of 19872888 is about 4457.9017485808. The cubic root of 19872888 is about 270.8654806390.

The spelling of 19872888 in words is "nineteen million, eight hundred seventy-two thousand, eight hundred eighty-eight".