13638274 has 16 divisors (see below), whose sum is σ = 22628088. Its totient is φ = 6124032.

The previous prime is 13638269. The next prime is 13638277. The reversal of 13638274 is 47283631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13638249 + 25 = 3693^2 + 5^2 .

It is not an unprimeable number, because it can be changed into a prime (13638277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6127 + ... + 8050.

Almost surely, 2^13638274 is an apocalyptic number.

13638274 is a deficient number, since it is larger than the sum of its proper divisors (8989814).

13638274 is a wasteful number, since it uses less digits than its factorization.

13638274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14229.

The product of its digits is 24192, while the sum is 34.

The square root of 13638274 is about 3693.0033847805. The cubic root of 13638274 is about 238.9203471662.

The spelling of 13638274 in words is "thirteen million, six hundred thirty-eight thousand, two hundred seventy-four".