12421896 has 32 divisors (see below), whose sum is σ = 32690400. Its totient is φ = 3922560.

The previous prime is 12421891. The next prime is 12421921. The reversal of 12421896 is 69812421.

It is not an unprimeable number, because it can be changed into a prime (12421891) 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 7 ways as a sum of consecutive naturals, for example, 13165 + ... + 14076.

It is an arithmetic number, because the mean of its divisors is an integer number (1021575).

Almost surely, 2^12421896 is an apocalyptic number.

It is an amenable number.

12421896 is an abundant number, since it is smaller than the sum of its proper divisors (20268504).

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

12421896 is a wasteful number, since it uses less digits than its factorization.

12421896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27269 (or 27265 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 12421896 is about 3524.4710241397. The cubic root of 12421896 is about 231.5950625512.

The spelling of 12421896 in words is "twelve million, four hundred twenty-one thousand, eight hundred ninety-six".