12447396 has 36 divisors (see below), whose sum is σ = 33885852. Its totient is φ = 3829824.

The previous prime is 12447389. The next prime is 12447401. The reversal of 12447396 is 69374421.

It can be written as a sum of positive squares in 2 ways, for example, as 6687396 + 5760000 = 2586^2 + 2400^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12447396.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12831 + ... + 13766.

Almost surely, 2^12447396 is an apocalyptic number.

It is an amenable number.

12447396 is an abundant number, since it is smaller than the sum of its proper divisors (21438456).

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

12447396 is a wasteful number, since it uses less digits than its factorization.

12447396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26620 (or 26615 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 12447396 is about 3528.0867336277. The cubic root of 12447396 is about 231.7534290783.

Subtracting 12447396 from its reverse (69374421), we obtain a square (56927025 = 7545²).

The spelling of 12447396 in words is "twelve million, four hundred forty-seven thousand, three hundred ninety-six".