12786436 has 24 divisors (see below), whose sum is σ = 25147584. Its totient is φ = 5644320.

The previous prime is 12786427. The next prime is 12786439. The reversal of 12786436 is 63468721.

It is a junction number, because it is equal to n+sod(n) for n = 12786395 and 12786404.

It is not an unprimeable number, because it can be changed into a prime (12786439) 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, 4150 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (1047816).

Almost surely, 2^12786436 is an apocalyptic number.

It is an amenable number.

12786436 is a deficient number, since it is larger than the sum of its proper divisors (12361148).

12786436 is a wasteful number, since it uses less digits than its factorization.

12786436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10731 (or 10729 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 12786436 is about 3575.8126349125. The cubic root of 12786436 is about 233.8387619853.

The spelling of 12786436 in words is "twelve million, seven hundred eighty-six thousand, four hundred thirty-six".