12782107 has 4 divisors (see below), whose sum is σ = 13765360. Its totient is φ = 11798856.

The previous prime is 12782101. The next prime is 12782129. The reversal of 12782107 is 70128721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12782107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12782101) 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, 491607 + ... + 491632.

It is an arithmetic number, because the mean of its divisors is an integer number (3441340).

Almost surely, 2^12782107 is an apocalyptic number.

12782107 is a deficient number, since it is larger than the sum of its proper divisors (983253).

12782107 is an equidigital number, since it uses as much as digits as its factorization.

12782107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983252.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12782107 is about 3575.2072667190. The cubic root of 12782107 is about 233.8123693752.

The spelling of 12782107 in words is "twelve million, seven hundred eighty-two thousand, one hundred seven".