12090920 has 16 divisors (see below), whose sum is σ = 27204660. Its totient is φ = 4836352.

The previous prime is 12090889. The next prime is 12090931. The reversal of 12090920 is 2909021.

12090920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 948676 = 3338^2 + 974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151097 + ... + 151176.

Almost surely, 2^12090920 is an apocalyptic number.

12090920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12090920 is an abundant number, since it is smaller than the sum of its proper divisors (15113740).

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

12090920 is a wasteful number, since it uses less digits than its factorization.

12090920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302284 (or 302280 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12090920 is about 3477.2000230070. The cubic root of 12090920 is about 229.5196022134.

Adding to 12090920 its reverse (2909021), we get a palindrome (14999941).

The spelling of 12090920 in words is "twelve million, ninety thousand, nine hundred twenty".