12405896 has 8 divisors (see below), whose sum is σ = 23261070. Its totient is φ = 6202944.

The previous prime is 12405893. The next prime is 12405919. The reversal of 12405896 is 69850421.

It can be written as a sum of positive squares in only one way, i.e., 11464996 + 940900 = 3386^2 + 970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12405893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775361 + ... + 775376.

Almost surely, 2^12405896 is an apocalyptic number.

It is an amenable number.

12405896 is a deficient number, since it is larger than the sum of its proper divisors (10855174).

12405896 is a wasteful number, since it uses less digits than its factorization.

12405896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550743 (or 1550739 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 12405896 is about 3522.2004485832. The cubic root of 12405896 is about 231.4955846319.

The spelling of 12405896 in words is "twelve million, four hundred five thousand, eight hundred ninety-six".