13538238 has 16 divisors (see below), whose sum is σ = 30944640. Its totient is φ = 3868056.

The previous prime is 13538233. The next prime is 13538269. The reversal of 13538238 is 83283531.

It is a junction number, because it is equal to n+sod(n) for n = 13538199 and 13538208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13538233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161128 + ... + 161211.

It is an arithmetic number, because the mean of its divisors is an integer number (1934040).

Almost surely, 2^13538238 is an apocalyptic number.

13538238 is an abundant number, since it is smaller than the sum of its proper divisors (17406402).

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

13538238 is a wasteful number, since it uses less digits than its factorization.

13538238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322351.

The product of its digits is 17280, while the sum is 33.

The square root of 13538238 is about 3679.4344674148. The cubic root of 13538238 is about 238.3347571380.

It can be divided in two parts, 1353 and 8238, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 13538238 in words is "thirteen million, five hundred thirty-eight thousand, two hundred thirty-eight".