12782236 has 12 divisors (see below), whose sum is σ = 22416912. Its totient is φ = 6377408.

The previous prime is 12782233. The next prime is 12782239. The reversal of 12782236 is 63228721.

It is an interprime number because it is at equal distance from previous prime (12782233) and next prime (12782239).

It is a junction number, because it is equal to n+sod(n) for n = 12782198 and 12782207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12782233) 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, 1165 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (1868076).

Almost surely, 2^12782236 is an apocalyptic number.

It is an amenable number.

12782236 is a deficient number, since it is larger than the sum of its proper divisors (9634676).

12782236 is a wasteful number, since it uses less digits than its factorization.

12782236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6860 (or 6858 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 12782236 is about 3575.2253075855. The cubic root of 12782236 is about 233.8131559355.

The spelling of 12782236 in words is "twelve million, seven hundred eighty-two thousand, two hundred thirty-six".