13688392 has 8 divisors (see below), whose sum is σ = 25665750. Its totient is φ = 6844192.

The previous prime is 13688371. The next prime is 13688393. The reversal of 13688392 is 29388631.

It can be written as a sum of positive squares in only one way, i.e., 11930116 + 1758276 = 3454^2 + 1326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13688393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 855517 + ... + 855532.

Almost surely, 2^13688392 is an apocalyptic number.

It is an amenable number.

13688392 is a deficient number, since it is larger than the sum of its proper divisors (11977358).

13688392 is a wasteful number, since it uses less digits than its factorization.

13688392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711055 (or 1711051 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 13688392 is about 3699.7826963215. The cubic root of 13688392 is about 239.2126513146.

The spelling of 13688392 in words is "thirteen million, six hundred eighty-eight thousand, three hundred ninety-two".