12997448 has 8 divisors (see below), whose sum is σ = 24370230. Its totient is φ = 6498720.

The previous prime is 12997441. The next prime is 12997477. The reversal of 12997448 is 84479921.

It can be written as a sum of positive squares in only one way, i.e., 12802084 + 195364 = 3578^2 + 442^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12997399 and 12997408.

It is not an unprimeable number, because it can be changed into a prime (12997441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812333 + ... + 812348.

Almost surely, 2^12997448 is an apocalyptic number.

It is an amenable number.

12997448 is a deficient number, since it is larger than the sum of its proper divisors (11372782).

12997448 is a wasteful number, since it uses less digits than its factorization.

12997448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624687 (or 1624683 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 12997448 is about 3605.1973593688. The cubic root of 12997448 is about 235.1180815956.

The spelling of 12997448 in words is "twelve million, nine hundred ninety-seven thousand, four hundred forty-eight".