12642988 has 6 divisors (see below), whose sum is σ = 22125236. Its totient is φ = 6321492.

The previous prime is 12642983. The next prime is 12642997. The reversal of 12642988 is 88924621.

It is a self number, because there is not a number n which added to its sum of digits gives 12642988.

It is not an unprimeable number, because it can be changed into a prime (12642983) 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 as a sum of consecutive naturals, namely, 1580370 + ... + 1580377.

Almost surely, 2^12642988 is an apocalyptic number.

It is an amenable number.

12642988 is a deficient number, since it is larger than the sum of its proper divisors (9482248).

12642988 is a wasteful number, since it uses less digits than its factorization.

12642988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160751 (or 3160749 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 12642988 is about 3555.6979624259. The cubic root of 12642988 is about 232.9610107478.

The spelling of 12642988 in words is "twelve million, six hundred forty-two thousand, nine hundred eighty-eight".