12821626 has 16 divisors (see below), whose sum is σ = 20179008. Its totient is φ = 6098400.

The previous prime is 12821623. The next prime is 12821629. The reversal of 12821626 is 62612821.

12821626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12821623) and next prime (12821629).

It is a junction number, because it is equal to n+sod(n) for n = 12821594 and 12821603.

It is not an unprimeable number, because it can be changed into a prime (12821623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9046 + ... + 10366.

It is an arithmetic number, because the mean of its divisors is an integer number (1261188).

Almost surely, 2^12821626 is an apocalyptic number.

12821626 is a deficient number, since it is larger than the sum of its proper divisors (7357382).

12821626 is a wasteful number, since it uses less digits than its factorization.

12821626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557.

The product of its digits is 2304, while the sum is 28.

The square root of 12821626 is about 3580.7298138787. The cubic root of 12821626 is about 234.0530841166.

The spelling of 12821626 in words is "twelve million, eight hundred twenty-one thousand, six hundred twenty-six".