12107782 has 4 divisors (see below), whose sum is σ = 18161676. Its totient is φ = 6053890.

The previous prime is 12107759. The next prime is 12107783. The reversal of 12107782 is 28770121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28770121 = 1607 ⋅17903.

It is a self number, because there is not a number n which added to its sum of digits gives 12107782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12107783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3026944 + ... + 3026947.

It is an arithmetic number, because the mean of its divisors is an integer number (4540419).

Almost surely, 2^12107782 is an apocalyptic number.

12107782 is a deficient number, since it is larger than the sum of its proper divisors (6053894).

12107782 is an equidigital number, since it uses as much as digits as its factorization.

12107782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6053893.

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

The square root of 12107782 is about 3479.6238302437. The cubic root of 12107782 is about 229.6262486835.

The spelling of 12107782 in words is "twelve million, one hundred seven thousand, seven hundred eighty-two".