12315546 has 24 divisors (see below), whose sum is σ = 27604980. Its totient is φ = 3963456.

The previous prime is 12315529. The next prime is 12315559. The reversal of 12315546 is 64551321.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 680625 = 3411^2 + 825^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11275 + ... + 12318.

Almost surely, 2^12315546 is an apocalyptic number.

12315546 is an abundant number, since it is smaller than the sum of its proper divisors (15289434).

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

12315546 is a wasteful number, since it uses less digits than its factorization.

12315546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23630 (or 23627 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 12315546 is about 3509.3512220922. The cubic root of 12315546 is about 230.9322340155.

Adding to 12315546 its reverse (64551321), we get a palindrome (76866867).

It can be divided in two parts, 123155 and 46, that added together give a square (123201 = 351²).

The spelling of 12315546 in words is "twelve million, three hundred fifteen thousand, five hundred forty-six".