13388538 has 8 divisors (see below), whose sum is σ = 26777088. Its totient is φ = 4462844.

The previous prime is 13388513. The next prime is 13388539. The reversal of 13388538 is 83588331.

It is a sphenic number, since it is the product of 3 distinct primes.

13388538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 13388496 and 13388505.

It is not an unprimeable number, because it can be changed into a prime (13388539) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1115706 + ... + 1115717.

It is an arithmetic number, because the mean of its divisors is an integer number (3347136).

Almost surely, 2^13388538 is an apocalyptic number.

13388538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13388538 is a wasteful number, since it uses less digits than its factorization.

13388538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231428.

The product of its digits is 69120, while the sum is 39.

The square root of 13388538 is about 3659.0351187164. The cubic root of 13388538 is about 237.4530315246.

The spelling of 13388538 in words is "thirteen million, three hundred eighty-eight thousand, five hundred thirty-eight".