13811172 has 24 divisors (see below), whose sum is σ = 32524800. Its totient is φ = 4561056.

The previous prime is 13811159. The next prime is 13811173. The reversal of 13811172 is 27111831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13811173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3972 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (1355200).

Almost surely, 2^13811172 is an apocalyptic number.

13811172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13811172 is an abundant number, since it is smaller than the sum of its proper divisors (18713628).

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

13811172 is a wasteful number, since it uses less digits than its factorization.

13811172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10675 (or 10673 counting only the distinct ones).

The product of its digits is 336, while the sum is 24.

The square root of 13811172 is about 3716.3385206410. The cubic root of 13811172 is about 239.9257409145.

The spelling of 13811172 in words is "thirteen million, eight hundred eleven thousand, one hundred seventy-two".