16659888 has 80 divisors (see below), whose sum is σ = 49639680. Its totient is φ = 4716288.

The previous prime is 16659883. The next prime is 16659911. The reversal of 16659888 is 88895661.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16659888.

It is not an unprimeable number, because it can be changed into a prime (16659883) 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, 60006 + ... + 60282.

It is an arithmetic number, because the mean of its divisors is an integer number (620496).

Almost surely, 2^16659888 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 16659888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24819840).

16659888 is an abundant number, since it is smaller than the sum of its proper divisors (32979792).

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

16659888 is a wasteful number, since it uses less digits than its factorization.

16659888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 468 counting only the distinct ones).

The product of its digits is 829440, while the sum is 51.

The square root of 16659888 is about 4081.6526064818. The cubic root of 16659888 is about 255.4018423938.

The spelling of 16659888 in words is "sixteen million, six hundred fifty-nine thousand, eight hundred eighty-eight".