12997938 has 32 divisors (see below), whose sum is σ = 27633600. Its totient is φ = 4064256.

The previous prime is 12997937. The next prime is 12997939. The reversal of 12997938 is 83979921.

It is an interprime number because it is at equal distance from previous prime (12997937) and next prime (12997939).

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12997937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12378 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (863550).

Almost surely, 2^12997938 is an apocalyptic number.

12997938 is an abundant number, since it is smaller than the sum of its proper divisors (14635662).

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

12997938 is a wasteful number, since it uses less digits than its factorization.

12997938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146.

The product of its digits is 244944, while the sum is 48.

The square root of 12997938 is about 3605.2653161730. The cubic root of 12997938 is about 235.1210361862.

The spelling of 12997938 in words is "twelve million, nine hundred ninety-seven thousand, nine hundred thirty-eight".