12997424 has 20 divisors (see below), whose sum is σ = 27472200. Its totient is φ = 5907840.

The previous prime is 12997421. The next prime is 12997433. The reversal of 12997424 is 42479921.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12997421) 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, 36749 + ... + 37100.

It is an arithmetic number, because the mean of its divisors is an integer number (1373610).

Almost surely, 2^12997424 is an apocalyptic number.

It is an amenable number.

12997424 is an abundant number, since it is smaller than the sum of its proper divisors (14474776).

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

12997424 is a wasteful number, since it uses less digits than its factorization.

12997424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73868 (or 73862 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 12997424 is about 3605.1940308394. The cubic root of 12997424 is about 235.1179368791.

The spelling of 12997424 in words is "twelve million, nine hundred ninety-seven thousand, four hundred twenty-four".