13688488 has 48 divisors (see below), whose sum is σ = 28728000. Its totient is φ = 6108960.

The previous prime is 13688471. The next prime is 13688501. The reversal of 13688488 is 88488631.

13688488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13688488² = 374749407452288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76383 + ... + 76561.

It is an arithmetic number, because the mean of its divisors is an integer number (598500).

Almost surely, 2^13688488 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 13688488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14364000).

13688488 is an abundant number, since it is smaller than the sum of its proper divisors (15039512).

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

13688488 is a wasteful number, since it uses less digits than its factorization.

13688488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 271 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The square root of 13688488 is about 3699.7956700337. The cubic root of 13688488 is about 239.2132105320.

The spelling of 13688488 in words is "thirteen million, six hundred eighty-eight thousand, four hundred eighty-eight".