12638782 has 16 divisors (see below), whose sum is σ = 20699280. Its totient is φ = 5752512.

The previous prime is 12638779. The next prime is 12638789. The reversal of 12638782 is 28783621.

12638782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432 + ... + 5227.

It is an arithmetic number, because the mean of its divisors is an integer number (1293705).

Almost surely, 2^12638782 is an apocalyptic number.

12638782 is a deficient number, since it is larger than the sum of its proper divisors (8060498).

12638782 is a wasteful number, since it uses less digits than its factorization.

12638782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747.

The product of its digits is 32256, while the sum is 37.

The square root of 12638782 is about 3555.1064681666. The cubic root of 12638782 is about 232.9351744849.

The spelling of 12638782 in words is "twelve million, six hundred thirty-eight thousand, seven hundred eighty-two".