12638882 has 4 divisors (see below), whose sum is σ = 18958326. Its totient is φ = 6319440.

The previous prime is 12638849. The next prime is 12638893. The reversal of 12638882 is 28883621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9853321 + 2785561 = 3139^2 + 1669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3159719 + ... + 3159722.

Almost surely, 2^12638882 is an apocalyptic number.

12638882 is a deficient number, since it is larger than the sum of its proper divisors (6319444).

12638882 is an equidigital number, since it uses as much as digits as its factorization.

12638882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6319443.

The product of its digits is 36864, while the sum is 38.

The square root of 12638882 is about 3555.1205324152. The cubic root of 12638882 is about 232.9357888230.

The spelling of 12638882 in words is "twelve million, six hundred thirty-eight thousand, eight hundred eighty-two".