12381604 has 12 divisors (see below), whose sum is σ = 21694428. Its totient is φ = 6183200.

The previous prime is 12381599. The next prime is 12381641. The reversal of 12381604 is 40618321.

It can be written as a sum of positive squares in 2 ways, for example, as 10824100 + 1557504 = 3290^2 + 1248^2 .

It is a super-2 number, since 2×12381604² = 306608235225632, which contains 22 as substring.

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, 3414 + ... + 6034.

It is an arithmetic number, because the mean of its divisors is an integer number (1807869).

Almost surely, 2^12381604 is an apocalyptic number.

It is an amenable number.

12381604 is a deficient number, since it is larger than the sum of its proper divisors (9312824).

12381604 is a wasteful number, since it uses less digits than its factorization.

12381604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806 (or 3804 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 12381604 is about 3518.7503463588. The cubic root of 12381604 is about 231.3443886415.

Adding to 12381604 its reverse (40618321), we get a palindrome (52999925).

The spelling of 12381604 in words is "twelve million, three hundred eighty-one thousand, six hundred four".