11811888 has 60 divisors (see below), whose sum is σ = 36066888. Its totient is φ = 3578880.

The previous prime is 11811887. The next prime is 11811913. The reversal of 11811888 is 88811811.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is not an unprimeable number, because it can be changed into a prime (11811883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2145 + ... + 5312.

Almost surely, 2^11811888 is an apocalyptic number.

11811888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11811888 is an abundant number, since it is smaller than the sum of its proper divisors (24255000).

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

11811888 is a wasteful number, since it uses less digits than its factorization.

11811888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482 (or 7473 counting only the distinct ones).

The product of its digits is 4096, while the sum is 36.

The square root of 11811888 is about 3436.8427371644. The cubic root of 11811888 is about 227.7402397170.

The spelling of 11811888 in words is "eleven million, eight hundred eleven thousand, eight hundred eighty-eight".