12090546 has 40 divisors (see below), whose sum is σ = 29180844. Its totient is φ = 3719520.

The previous prime is 12090541. The next prime is 12090557. The reversal of 12090546 is 64509021.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 455625 = 3411^2 + 675^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12090541) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 765 + ... + 4976.

Almost surely, 2^12090546 is an apocalyptic number.

12090546 is an abundant number, since it is smaller than the sum of its proper divisors (17090298).

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

12090546 is a wasteful number, since it uses less digits than its factorization.

12090546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5768 (or 5759 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12090546 is about 3477.1462436889. The cubic root of 12090546 is about 229.5172356657.

Adding to 12090546 its reverse (64509021), we get a palindrome (76599567).

The spelling of 12090546 in words is "twelve million, ninety thousand, five hundred forty-six".