12090912 has 96 divisors (see below), whose sum is σ = 33929280. Its totient is φ = 3763200.

The previous prime is 12090889. The next prime is 12090931. The reversal of 12090912 is 21909021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 119662 + ... + 119762.

It is an arithmetic number, because the mean of its divisors is an integer number (353430).

Almost surely, 2^12090912 is an apocalyptic number.

12090912 is a gapful number since it is divisible by the number (12) 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 12090912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16964640).

12090912 is an abundant number, since it is smaller than the sum of its proper divisors (21838368).

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

12090912 is a wasteful number, since it uses less digits than its factorization.

12090912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 12090912 is about 3477.1988726560. The cubic root of 12090912 is about 229.5195515926.

Adding to 12090912 its reverse (21909021), we get a palindrome (33999933).

The spelling of 12090912 in words is "twelve million, ninety thousand, nine hundred twelve".