12820506 has 16 divisors (see below), whose sum is σ = 25756704. Its totient is φ = 4254224.

The previous prime is 12820487. The next prime is 12820529. The reversal of 12820506 is 60502821.

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, 3345 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (1609794).

Almost surely, 2^12820506 is an apocalyptic number.

12820506 is an abundant number, since it is smaller than the sum of its proper divisors (12936198).

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

12820506 is a wasteful number, since it uses less digits than its factorization.

12820506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9645.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12820506 is about 3580.5734177643. The cubic root of 12820506 is about 234.0462688841.

The spelling of 12820506 in words is "twelve million, eight hundred twenty thousand, five hundred six".