13688324 has 18 divisors (see below), whose sum is σ = 25940250. Its totient is φ = 6317376.

The previous prime is 13688317. The next prime is 13688333. The reversal of 13688324 is 42388631.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 145924 + 13542400 = 382^2 + 3680^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9449 + ... + 10800.

It is an arithmetic number, because the mean of its divisors is an integer number (1441125).

Almost surely, 2^13688324 is an apocalyptic number.

It is an amenable number.

13688324 is a deficient number, since it is larger than the sum of its proper divisors (12251926).

13688324 is a wasteful number, since it uses less digits than its factorization.

13688324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20279 (or 20264 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 13688324 is about 3699.7735065812. The cubic root of 13688324 is about 239.2122552007.

The spelling of 13688324 in words is "thirteen million, six hundred eighty-eight thousand, three hundred twenty-four".