12011328 has 140 divisors (see below), whose sum is σ = 40814752. Its totient is φ = 3421440.

The previous prime is 12011323. The next prime is 12011357. The reversal of 12011328 is 82311021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 12011328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36123 + ... + 36453.

Almost surely, 2^12011328 is an apocalyptic number.

12011328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20407376).

12011328 is an abundant number, since it is smaller than the sum of its proper divisors (28803424).

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

12011328 is an equidigital number, since it uses as much as digits as its factorization.

12011328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 12011328 is about 3465.7362854089. The cubic root of 12011328 is about 229.0148665367.

Adding to 12011328 its reverse (82311021), we get a palindrome (94322349).

The spelling of 12011328 in words is "twelve million, eleven thousand, three hundred twenty-eight".