12931896 has 16 divisors (see below), whose sum is σ = 32329800. Its totient is φ = 4310624.

The previous prime is 12931889. The next prime is 12931903. The reversal of 12931896 is 69813921.

It is an interprime number because it is at equal distance from previous prime (12931889) and next prime (12931903).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 269391 + ... + 269438.

Almost surely, 2^12931896 is an apocalyptic number.

It is an amenable number.

12931896 is an abundant number, since it is smaller than the sum of its proper divisors (19397904).

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

12931896 is a wasteful number, since it uses less digits than its factorization.

12931896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538838 (or 538834 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 12931896 is about 3596.0945482565. The cubic root of 12931896 is about 234.7221463321.

The spelling of 12931896 in words is "twelve million, nine hundred thirty-one thousand, eight hundred ninety-six".