12936978 has 24 divisors (see below), whose sum is σ = 28132416. Its totient is φ = 4296600.

The previous prime is 12936977. The next prime is 12936997. The reversal of 12936978 is 87963921.

It is not an unprimeable number, because it can be changed into a prime (12936977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4443 + ... + 6753.

It is an arithmetic number, because the mean of its divisors is an integer number (1172184).

Almost surely, 2^12936978 is an apocalyptic number.

12936978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12936978 is an abundant number, since it is smaller than the sum of its proper divisors (15195438).

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

12936978 is a wasteful number, since it uses less digits than its factorization.

12936978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630 (or 2627 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12936978 is about 3596.8010787365. The cubic root of 12936978 is about 234.7528894839.

The spelling of 12936978 in words is "twelve million, nine hundred thirty-six thousand, nine hundred seventy-eight".