12347936 has 24 divisors (see below), whose sum is σ = 24969420. Its totient is φ = 6006528.

The previous prime is 12347911. The next prime is 12347953. The reversal of 12347936 is 63974321.

It can be written as a sum of positive squares in 2 ways, for example, as 8737936 + 3610000 = 2956^2 + 1900^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12347896 and 12347905.

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, 4031 + ... + 6398.

Almost surely, 2^12347936 is an apocalyptic number.

12347936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12347936 is an abundant number, since it is smaller than the sum of its proper divisors (12621484).

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

12347936 is a wasteful number, since it uses less digits than its factorization.

12347936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10476 (or 10468 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

The square root of 12347936 is about 3513.9630049276. The cubic root of 12347936 is about 231.1345080959.

The spelling of 12347936 in words is "twelve million, three hundred forty-seven thousand, nine hundred thirty-six".