13013538 has 32 divisors (see below), whose sum is σ = 27361152. Its totient is φ = 4118400.

The previous prime is 13013527. The next prime is 13013543. The reversal of 13013538 is 83531031.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24718 + ... + 25238.

It is an arithmetic number, because the mean of its divisors is an integer number (855036).

Almost surely, 2^13013538 is an apocalyptic number.

13013538 is an abundant number, since it is smaller than the sum of its proper divisors (14347614).

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

13013538 is a wasteful number, since it uses less digits than its factorization.

13013538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 13013538 is about 3607.4281697631. The cubic root of 13013538 is about 235.2150619143.

Adding to 13013538 its reverse (83531031), we get a palindrome (96544569).

The spelling of 13013538 in words is "thirteen million, thirteen thousand, five hundred thirty-eight".