13815136 has 24 divisors (see below), whose sum is σ = 28138320. Its totient is φ = 6668928.

The previous prime is 13815079. The next prime is 13815149. The reversal of 13815136 is 63151831.

13815136 is nontrivially palindromic in base 5.

It is a congruent number.

It is an unprimeable number.

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, 6516 + ... + 8371.

It is an arithmetic number, because the mean of its divisors is an integer number (1172430).

Almost surely, 2^13815136 is an apocalyptic number.

13815136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13815136 is an abundant number, since it is smaller than the sum of its proper divisors (14323184).

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

13815136 is a wasteful number, since it uses less digits than its factorization.

13815136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14926 (or 14918 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 13815136 is about 3716.8718030085. The cubic root of 13815136 is about 239.9486927360.

Adding to 13815136 its reverse (63151831), we get a palindrome (76966967).

The spelling of 13815136 in words is "thirteen million, eight hundred fifteen thousand, one hundred thirty-six".