12304561 has 8 divisors (see below), whose sum is σ = 12480104. Its totient is φ = 12130560.

The previous prime is 12304559. The next prime is 12304573. The reversal of 12304561 is 16540321.

12304561 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 4 ways, for example, as 913936 + 11390625 = 956^2 + 3375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12304561 - 2¹ = 12304559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12304511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28201 + ... + 28633.

It is an arithmetic number, because the mean of its divisors is an integer number (1560013).

Almost surely, 2^12304561 is an apocalyptic number.

It is an amenable number.

12304561 is a deficient number, since it is larger than the sum of its proper divisors (175543).

12304561 is a wasteful number, since it uses less digits than its factorization.

12304561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12304561 is about 3507.7857688291. The cubic root of 12304561 is about 230.8635526593.

Adding to 12304561 its reverse (16540321), we get a palindrome (28844882).

The spelling of 12304561 in words is "twelve million, three hundred four thousand, five hundred sixty-one".