13522638 has 8 divisors (see below), whose sum is σ = 27045288. Its totient is φ = 4507544.

The previous prime is 13522637. The next prime is 13522651. The reversal of 13522638 is 83622531.

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

13522638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522637) 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, 1126881 + ... + 1126892.

It is an arithmetic number, because the mean of its divisors is an integer number (3380661).

Almost surely, 2^13522638 is an apocalyptic number.

13522638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13522638 is a wasteful number, since it uses less digits than its factorization.

13522638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253778.

The product of its digits is 8640, while the sum is 30.

The square root of 13522638 is about 3677.3139653829. The cubic root of 13522638 is about 238.2431782287.

The spelling of 13522638 in words is "thirteen million, five hundred twenty-two thousand, six hundred thirty-eight".