13538512 has 20 divisors (see below), whose sum is σ = 28249060. Its totient is φ = 6248448.

The previous prime is 13538471. The next prime is 13538519. The reversal of 13538512 is 21583531.

It can be written as a sum of positive squares in 2 ways, for example, as 8976016 + 4562496 = 2996^2 + 2136^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13538519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32337 + ... + 32752.

It is an arithmetic number, because the mean of its divisors is an integer number (1412453).

Almost surely, 2^13538512 is an apocalyptic number.

It is an amenable number.

13538512 is an abundant number, since it is smaller than the sum of its proper divisors (14710548).

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

13538512 is a wasteful number, since it uses less digits than its factorization.

13538512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65110 (or 65104 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 13538512 is about 3679.4717012093. The cubic root of 13538512 is about 238.3363650105.

The spelling of 13538512 in words is "thirteen million, five hundred thirty-eight thousand, five hundred twelve".