12789678 has 32 divisors (see below), whose sum is σ = 29548800. Its totient is φ = 3647360.

The previous prime is 12789677. The next prime is 12789683. The reversal of 12789678 is 87698721.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12789677) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4578 + ... + 6821.

It is an arithmetic number, because the mean of its divisors is an integer number (923400).

Almost surely, 2^12789678 is an apocalyptic number.

12789678 is an abundant number, since it is smaller than the sum of its proper divisors (16759122).

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

12789678 is a wasteful number, since it uses less digits than its factorization.

12789678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11432.

The product of its digits is 338688, while the sum is 48.

The square root of 12789678 is about 3576.2659297094. The cubic root of 12789678 is about 233.8585235828.

The spelling of 12789678 in words is "twelve million, seven hundred eighty-nine thousand, six hundred seventy-eight".