13261688 has 32 divisors (see below), whose sum is σ = 27866160. Its totient is φ = 5863680.

The previous prime is 13261669. The next prime is 13261697. The reversal of 13261688 is 88616231.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1220 + ... + 5292.

Almost surely, 2^13261688 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 13261688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13933080).

13261688 is an abundant number, since it is smaller than the sum of its proper divisors (14604472).

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

13261688 is a wasteful number, since it uses less digits than its factorization.

13261688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127 (or 4123 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 13261688 is about 3641.6600610161. The cubic root of 13261688 is about 236.7007326043.

The spelling of 13261688 in words is "thirteen million, two hundred sixty-one thousand, six hundred eighty-eight".