13506040 has 16 divisors (see below), whose sum is σ = 30388680. Its totient is φ = 5402400.

The previous prime is 13506029. The next prime is 13506047. The reversal of 13506040 is 4060531.

It is a junction number, because it is equal to n+sod(n) for n = 13505999 and 13506017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13506047) 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, 168786 + ... + 168865.

Almost surely, 2^13506040 is an apocalyptic number.

13506040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13506040 is an abundant number, since it is smaller than the sum of its proper divisors (16882640).

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

13506040 is a wasteful number, since it uses less digits than its factorization.

13506040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337662 (or 337658 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13506040 is about 3675.0564621513. The cubic root of 13506040 is about 238.1456632501.

Adding to 13506040 its reverse (4060531), we get a palindrome (17566571).

The spelling of 13506040 in words is "thirteen million, five hundred six thousand, forty".