12782304 has 36 divisors (see below), whose sum is σ = 36350496. Its totient is φ = 4260672.

The previous prime is 12782303. The next prime is 12782311. The reversal of 12782304 is 40328721.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12782303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21904 + ... + 22479.

It is an arithmetic number, because the mean of its divisors is an integer number (1009736).

Almost surely, 2^12782304 is an apocalyptic number.

It is an amenable number.

12782304 is an abundant number, since it is smaller than the sum of its proper divisors (23568192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12782304 is a wasteful number, since it uses less digits than its factorization.

12782304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44399 (or 44388 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12782304 is about 3575.2348174630. The cubic root of 12782304 is about 233.8135705543.

The spelling of 12782304 in words is "twelve million, seven hundred eighty-two thousand, three hundred four".