13811136 has 28 divisors (see below), whose sum is σ = 36542472. Its totient is φ = 4603648.

The previous prime is 13811131. The next prime is 13811159. The reversal of 13811136 is 63111831.

13811136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13811136² = 381494955220992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13811131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35775 + ... + 36158.

Almost surely, 2^13811136 is an apocalyptic number.

13811136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13811136 is an abundant number, since it is smaller than the sum of its proper divisors (22731336).

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

13811136 is an equidigital number, since it uses as much as digits as its factorization.

13811136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71948 (or 71938 counting only the distinct ones).

The product of its digits is 432, while the sum is 24.

The square root of 13811136 is about 3716.3336771609. Note that the first 3 decimals coincide. The cubic root of 13811136 is about 239.9255324520.

Adding to 13811136 its reverse (63111831), we get a palindrome (76922967).

The spelling of 13811136 in words is "thirteen million, eight hundred eleven thousand, one hundred thirty-six".