13140538 has 16 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 6252400.

The previous prime is 13140529. The next prime is 13140551. The reversal of 13140538 is 83504131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2523 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^13140538 is an apocalyptic number.

13140538 is a deficient number, since it is larger than the sum of its proper divisors (7543622).

13140538 is a wasteful number, since it uses less digits than its factorization.

13140538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 13140538 is about 3624.9879999801. The cubic root of 13140538 is about 235.9777461540.

Adding to 13140538 its reverse (83504131), we get a palindrome (96644669).

The spelling of 13140538 in words is "thirteen million, one hundred forty thousand, five hundred thirty-eight".