12347472 has 20 divisors (see below), whose sum is σ = 31897760. Its totient is φ = 4115808.

The previous prime is 12347471. The next prime is 12347483. The reversal of 12347472 is 27474321.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12347471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128572 + ... + 128667.

It is an arithmetic number, because the mean of its divisors is an integer number (1594888).

Almost surely, 2^12347472 is an apocalyptic number.

12347472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12347472 is an abundant number, since it is smaller than the sum of its proper divisors (19550288).

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

12347472 is a wasteful number, since it uses less digits than its factorization.

12347472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257250 (or 257244 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 12347472 is about 3513.8969819845. The cubic root of 12347472 is about 231.1316129358.

The spelling of 12347472 in words is "twelve million, three hundred forty-seven thousand, four hundred seventy-two".