12012782 has 4 divisors (see below), whose sum is σ = 18019176. Its totient is φ = 6006390.

The previous prime is 12012743. The next prime is 12012809. The reversal of 12012782 is 28721021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3003194 + ... + 3003197.

It is an arithmetic number, because the mean of its divisors is an integer number (4504794).

Almost surely, 2^12012782 is an apocalyptic number.

12012782 is a deficient number, since it is larger than the sum of its proper divisors (6006394).

12012782 is an equidigital number, since it uses as much as digits as its factorization.

12012782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006393.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12012782 is about 3465.9460468969. The cubic root of 12012782 is about 229.0241070964.

The spelling of 12012782 in words is "twelve million, twelve thousand, seven hundred eighty-two".