12778708 has 12 divisors (see below), whose sum is σ = 23335200. Its totient is φ = 6111512.

The previous prime is 12778693. The next prime is 12778729. The reversal of 12778708 is 80787721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69358 + ... + 69541.

It is an arithmetic number, because the mean of its divisors is an integer number (1944600).

Almost surely, 2^12778708 is an apocalyptic number.

It is an amenable number.

12778708 is a deficient number, since it is larger than the sum of its proper divisors (10556492).

12778708 is a wasteful number, since it uses less digits than its factorization.

12778708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138926 (or 138924 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 40.

The square root of 12778708 is about 3574.7318780574. The cubic root of 12778708 is about 233.7916425185.

The spelling of 12778708 in words is "twelve million, seven hundred seventy-eight thousand, seven hundred eight".