13638548 has 24 divisors (see below), whose sum is σ = 29757504. Its totient is φ = 5313600.

The previous prime is 13638511. The next prime is 13638551. The reversal of 13638548 is 84583631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21833 + ... + 22448.

It is an arithmetic number, because the mean of its divisors is an integer number (1239896).

Almost surely, 2^13638548 is an apocalyptic number.

It is an amenable number.

13638548 is an abundant number, since it is smaller than the sum of its proper divisors (16118956).

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

13638548 is a wasteful number, since it uses less digits than its factorization.

13638548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44303 (or 44301 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 13638548 is about 3693.0404817711. The cubic root of 13638548 is about 238.9219471668.

The spelling of 13638548 in words is "thirteen million, six hundred thirty-eight thousand, five hundred forty-eight".