12521936 has 40 divisors (see below), whose sum is σ = 28938624. Its totient is φ = 5132160.

The previous prime is 12521921. The next prime is 12521953. The reversal of 12521936 is 63912521.

12521936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12521899 and 12521908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146 + ... + 5006.

Almost surely, 2^12521936 is an apocalyptic number.

12521936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12521936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14469312).

12521936 is an abundant number, since it is smaller than the sum of its proper divisors (16416688).

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

12521936 is a wasteful number, since it uses less digits than its factorization.

12521936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4899 (or 4893 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 12521936 is about 3538.6347649906. The cubic root of 12521936 is about 232.2151195356.

The spelling of 12521936 in words is "twelve million, five hundred twenty-one thousand, nine hundred thirty-six".