12906436 has 12 divisors (see below), whose sum is σ = 22617280. Its totient is φ = 6444360.

The previous prime is 12906433. The next prime is 12906449. The reversal of 12906436 is 63460921.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12906398 and 12906407.

It is not an unprimeable number, because it can be changed into a prime (12906433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1921 + ... + 5431.

Almost surely, 2^12906436 is an apocalyptic number.

It is an amenable number.

12906436 is a deficient number, since it is larger than the sum of its proper divisors (9710844).

12906436 is a wasteful number, since it uses less digits than its factorization.

12906436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434 (or 4432 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 12906436 is about 3592.5528527775. The cubic root of 12906436 is about 234.5680067288.

The spelling of 12906436 in words is "twelve million, nine hundred six thousand, four hundred thirty-six".