12639202 has 8 divisors (see below), whose sum is σ = 18992556. Its totient is φ = 6308352.

The previous prime is 12639181. The next prime is 12639203. The reversal of 12639202 is 20293621.

It is a happy number.

12639202 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 12047841 + 591361 = 3471^2 + 769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12639203) 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, 4143 + ... + 6514.

Almost surely, 2^12639202 is an apocalyptic number.

12639202 is a deficient number, since it is larger than the sum of its proper divisors (6353354).

12639202 is a wasteful number, since it uses less digits than its factorization.

12639202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11252.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 12639202 is about 3555.1655376367. The cubic root of 12639202 is about 232.9377546831.

The spelling of 12639202 in words is "twelve million, six hundred thirty-nine thousand, two hundred two".