12679988 has 12 divisors (see below), whose sum is σ = 22731492. Its totient is φ = 6185280.

The previous prime is 12679987. The next prime is 12679991. The reversal of 12679988 is 88997621.

12679988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4048144 + 8631844 = 2012^2 + 2938^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12679987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38495 + ... + 38822.

It is an arithmetic number, because the mean of its divisors is an integer number (1894291).

Almost surely, 2^12679988 is an apocalyptic number.

It is an amenable number.

12679988 is a deficient number, since it is larger than the sum of its proper divisors (10051504).

12679988 is a wasteful number, since it uses less digits than its factorization.

12679988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77362 (or 77360 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 12679988 is about 3560.8970779847. The cubic root of 12679988 is about 233.1880446999.

The spelling of 12679988 in words is "twelve million, six hundred seventy-nine thousand, nine hundred eighty-eight".