12947824 has 10 divisors (see below), whose sum is σ = 25086440. Its totient is φ = 6473904.

The previous prime is 12947819. The next prime is 12947843. The reversal of 12947824 is 42874921.

It is a super-2 number, since 2×12947824² = 335292292669952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404604 + ... + 404635.

It is an arithmetic number, because the mean of its divisors is an integer number (2508644).

Almost surely, 2^12947824 is an apocalyptic number.

It is an amenable number.

12947824 is a deficient number, since it is larger than the sum of its proper divisors (12138616).

12947824 is an equidigital number, since it uses as much as digits as its factorization.

12947824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809247 (or 809241 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 12947824 is about 3598.3084914999. The cubic root of 12947824 is about 234.8184745748.

The spelling of 12947824 in words is "twelve million, nine hundred forty-seven thousand, eight hundred twenty-four".