12756406 has 8 divisors (see below), whose sum is σ = 20606544. Its totient is φ = 5887560.

The previous prime is 12756389. The next prime is 12756413. The reversal of 12756406 is 60465721.

It is a happy number.

12756406 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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245290 + ... + 245341.

It is an arithmetic number, because the mean of its divisors is an integer number (2575818).

Almost surely, 2^12756406 is an apocalyptic number.

12756406 is a deficient number, since it is larger than the sum of its proper divisors (7850138).

12756406 is a wasteful number, since it uses less digits than its factorization.

12756406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490646.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 12756406 is about 3571.6111210489. The cubic root of 12756406 is about 233.6555552759.

The spelling of 12756406 in words is "twelve million, seven hundred fifty-six thousand, four hundred six".