13811252 has 48 divisors (see below), whose sum is σ = 31328640. Its totient is φ = 5173632.

The previous prime is 13811243. The next prime is 13811261. The reversal of 13811252 is 25211831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13811243) and next prime (13811261).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5918 + ... + 7914.

It is an arithmetic number, because the mean of its divisors is an integer number (652680).

Almost surely, 2^13811252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13811252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15664320).

13811252 is an abundant number, since it is smaller than the sum of its proper divisors (17517388).

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

13811252 is a wasteful number, since it uses less digits than its factorization.

13811252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040 (or 2038 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 13811252 is about 3716.3492839075. The cubic root of 13811252 is about 239.9262041632.

The spelling of 13811252 in words is "thirteen million, eight hundred eleven thousand, two hundred fifty-two".