12791782 has 4 divisors (see below), whose sum is σ = 19187676. Its totient is φ = 6395890.

The previous prime is 12791777. The next prime is 12791789. The reversal of 12791782 is 28719721.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197944 + ... + 3197947.

It is an arithmetic number, because the mean of its divisors is an integer number (4796919).

Almost surely, 2^12791782 is an apocalyptic number.

12791782 is a deficient number, since it is larger than the sum of its proper divisors (6395894).

12791782 is an equidigital number, since it uses as much as digits as its factorization.

12791782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395893.

The product of its digits is 14112, while the sum is 37.

The square root of 12791782 is about 3576.5600791822. The cubic root of 12791782 is about 233.8713467191.

The spelling of 12791782 in words is "twelve million, seven hundred ninety-one thousand, seven hundred eighty-two".