13487688 has 64 divisors (see below), whose sum is σ = 38404800. Its totient is φ = 4383360.

The previous prime is 13487651. The next prime is 13487707. The reversal of 13487688 is 88678431.

13487688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8095 + ... + 9617.

It is an arithmetic number, because the mean of its divisors is an integer number (600075).

Almost surely, 2^13487688 is an apocalyptic number.

13487688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13487688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19202400).

13487688 is an abundant number, since it is smaller than the sum of its proper divisors (24917112).

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

13487688 is a wasteful number, since it uses less digits than its factorization.

13487688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579 (or 1569 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 13487688 is about 3672.5587810136. The cubic root of 13487688 is about 238.0377502909.

The spelling of 13487688 in words is "thirteen million, four hundred eighty-seven thousand, six hundred eighty-eight".