13638241 has 4 divisors (see below), whose sum is σ = 14231232. Its totient is φ = 13045252.

The previous prime is 13638239. The next prime is 13638253. The reversal of 13638241 is 14283631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13638241 - 2¹ = 13638239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13638211) 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, 296461 + ... + 296506.

It is an arithmetic number, because the mean of its divisors is an integer number (3557808).

Almost surely, 2^13638241 is an apocalyptic number.

It is an amenable number.

13638241 is a deficient number, since it is larger than the sum of its proper divisors (592991).

13638241 is an equidigital number, since it uses as much as digits as its factorization.

13638241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592990.

The product of its digits is 3456, while the sum is 28.

The square root of 13638241 is about 3692.9989168696. The cubic root of 13638241 is about 238.9201544640.

It can be divided in two parts, 1363 and 8241, that added together give a square (9604 = 98²).

The spelling of 13638241 in words is "thirteen million, six hundred thirty-eight thousand, two hundred forty-one".