13888688 has 80 divisors (see below), whose sum is σ = 31712256. Its totient is φ = 5829120.

The previous prime is 13888669. The next prime is 13888723. The reversal of 13888688 is 88688831.

It is a super-2 number, since 2×13888688² = 385791308722688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190220 + ... + 190292.

Almost surely, 2^13888688 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 13888688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15856128).

13888688 is an abundant number, since it is smaller than the sum of its proper divisors (17823568).

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

13888688 is a wasteful number, since it uses less digits than its factorization.

13888688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 156 counting only the distinct ones).

The product of its digits is 589824, while the sum is 50.

The square root of 13888688 is about 3726.7530103295. The cubic root of 13888688 is about 240.3737694513.

The spelling of 13888688 in words is "thirteen million, eight hundred eighty-eight thousand, six hundred eighty-eight".