13507438 has 12 divisors (see below), whose sum is σ = 23569272. Its totient is φ = 5788860.

The previous prime is 13507433. The next prime is 13507447. The reversal of 13507438 is 83470531.

It is a super-3 number, since 3×13507438³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13507433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68818 + ... + 69013.

It is an arithmetic number, because the mean of its divisors is an integer number (1964106).

Almost surely, 2^13507438 is an apocalyptic number.

13507438 is a deficient number, since it is larger than the sum of its proper divisors (10061834).

13507438 is a wasteful number, since it uses less digits than its factorization.

13507438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137847 (or 137840 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 13507438 is about 3675.2466583891. The cubic root of 13507438 is about 238.1538797258.

Adding to 13507438 its reverse (83470531), we get a palindrome (96977969).

The spelling of 13507438 in words is "thirteen million, five hundred seven thousand, four hundred thirty-eight".