12639274 has 8 divisors (see below), whose sum is σ = 19471428. Its totient is φ = 6148800.

The previous prime is 12639269. The next prime is 12639283. The reversal of 12639274 is 47293621.

It can be written as a sum of positive squares in 2 ways, for example, as 10936249 + 1703025 = 3307^2 + 1305^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85327 + ... + 85474.

Almost surely, 2^12639274 is an apocalyptic number.

12639274 is a deficient number, since it is larger than the sum of its proper divisors (6832154).

12639274 is a wasteful number, since it uses less digits than its factorization.

12639274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170840.

The product of its digits is 18144, while the sum is 34.

The square root of 12639274 is about 3555.1756637331. The cubic root of 12639274 is about 232.9381969971.

The spelling of 12639274 in words is "twelve million, six hundred thirty-nine thousand, two hundred seventy-four".