12821748 has 48 divisors (see below), whose sum is σ = 30844800. Its totient is φ = 4144000.

The previous prime is 12821747. The next prime is 12821761. The reversal of 12821748 is 84712821.

It is a happy number.

12821748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12821747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85978 + ... + 86126.

It is an arithmetic number, because the mean of its divisors is an integer number (642600).

Almost surely, 2^12821748 is an apocalyptic number.

It is an amenable number.

12821748 is an abundant number, since it is smaller than the sum of its proper divisors (18023052).

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

12821748 is a wasteful number, since it uses less digits than its factorization.

12821748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 326 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 12821748 is about 3580.7468494715. The cubic root of 12821748 is about 234.0538264662.

The spelling of 12821748 in words is "twelve million, eight hundred twenty-one thousand, seven hundred forty-eight".