13638552 has 16 divisors (see below), whose sum is σ = 34096440. Its totient is φ = 4546176.

The previous prime is 13638551. The next prime is 13638593. The reversal of 13638552 is 25583631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13638551) 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, 284113 + ... + 284160.

Almost surely, 2^13638552 is an apocalyptic number.

13638552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13638552 is an abundant number, since it is smaller than the sum of its proper divisors (20457888).

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

13638552 is a wasteful number, since it uses less digits than its factorization.

13638552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568282 (or 568278 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 13638552 is about 3693.0410233302. The cubic root of 13638552 is about 238.9219705243.

The spelling of 13638552 in words is "thirteen million, six hundred thirty-eight thousand, five hundred fifty-two".