12390806 has 8 divisors (see below), whose sum is σ = 18627744. Its totient is φ = 6181560.

The previous prime is 12390803. The next prime is 12390823. The reversal of 12390806 is 60809321.

12390806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12390803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5765 + ... + 7616.

It is an arithmetic number, because the mean of its divisors is an integer number (2328468).

Almost surely, 2^12390806 is an apocalyptic number.

12390806 is a deficient number, since it is larger than the sum of its proper divisors (6236938).

12390806 is a wasteful number, since it uses less digits than its factorization.

12390806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13846.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12390806 is about 3520.0576699821. The cubic root of 12390806 is about 231.4016861155.

The spelling of 12390806 in words is "twelve million, three hundred ninety thousand, eight hundred six".