12781704 has 64 divisors (see below), whose sum is σ = 34957440. Its totient is φ = 3870720.

The previous prime is 12781669. The next prime is 12781723. The reversal of 12781704 is 40718721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21864 + ... + 22440.

It is an arithmetic number, because the mean of its divisors is an integer number (546210).

Almost surely, 2^12781704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12781704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17478720).

12781704 is an abundant number, since it is smaller than the sum of its proper divisors (22175736).

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

12781704 is a wasteful number, since it uses less digits than its factorization.

12781704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 12781704 is about 3575.1509059059. The cubic root of 12781704 is about 233.8099121023.

It can be divided in two parts, 1278 and 1704, that multiplied together give a palindrome (2177712).

The spelling of 12781704 in words is "twelve million, seven hundred eighty-one thousand, seven hundred four".