11813888 has 44 divisors (see below), whose sum is σ = 24072720. Its totient is φ = 5793792.

The previous prime is 11813887. The next prime is 11813891. The reversal of 11813888 is 88831811.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (11813887) 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, 84923 + ... + 85061.

Almost surely, 2^11813888 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 11813888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12036360).

11813888 is an abundant number, since it is smaller than the sum of its proper divisors (12258832).

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

11813888 is an equidigital number, since it uses as much as digits as its factorization.

11813888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 224 counting only the distinct ones).

The product of its digits is 12288, while the sum is 38.

The square root of 11813888 is about 3437.1336895733. The cubic root of 11813888 is about 227.7530927223.

The spelling of 11813888 in words is "eleven million, eight hundred thirteen thousand, eight hundred eighty-eight".