13638392 has 8 divisors (see below), whose sum is σ = 25572000. Its totient is φ = 6819192.

The previous prime is 13638377. The next prime is 13638397. The reversal of 13638392 is 29383631.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13638397) 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, 852392 + ... + 852407.

It is an arithmetic number, because the mean of its divisors is an integer number (3196500).

Almost surely, 2^13638392 is an apocalyptic number.

It is an amenable number.

13638392 is a deficient number, since it is larger than the sum of its proper divisors (11933608).

13638392 is a wasteful number, since it uses less digits than its factorization.

13638392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704805 (or 1704801 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 13638392 is about 3693.0193609024. The cubic root of 13638392 is about 238.9210362202.

The spelling of 13638392 in words is "thirteen million, six hundred thirty-eight thousand, three hundred ninety-two".