12031888 has 40 divisors (see below), whose sum is σ = 25668000. Its totient is φ = 5418240.

The previous prime is 12031867. The next prime is 12031891. The reversal of 12031888 is 88813021.

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 7 ways as a sum of consecutive naturals, for example, 23863 + ... + 24361.

It is an arithmetic number, because the mean of its divisors is an integer number (641700).

Almost surely, 2^12031888 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 12031888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12834000).

12031888 is an abundant number, since it is smaller than the sum of its proper divisors (13636112).

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

12031888 is a wasteful number, since it uses less digits than its factorization.

12031888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 12031888 is about 3468.7011978549. The cubic root of 12031888 is about 229.1454616339.

The spelling of 12031888 in words is "twelve million, thirty-one thousand, eight hundred eighty-eight".