13731438 has 16 divisors (see below), whose sum is σ = 31386240. Its totient is φ = 3923256.

The previous prime is 13731409. The next prime is 13731439. The reversal of 13731438 is 83413731.

13731438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13731439) 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, 163428 + ... + 163511.

It is an arithmetic number, because the mean of its divisors is an integer number (1961640).

Almost surely, 2^13731438 is an apocalyptic number.

13731438 is an abundant number, since it is smaller than the sum of its proper divisors (17654802).

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

13731438 is a wasteful number, since it uses less digits than its factorization.

13731438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326951.

The product of its digits is 6048, while the sum is 30.

The square root of 13731438 is about 3705.5954987019. The cubic root of 13731438 is about 239.4631402633.

The spelling of 13731438 in words is "thirteen million, seven hundred thirty-one thousand, four hundred thirty-eight".