13662544 has 40 divisors (see below), whose sum is σ = 30454400. Its totient is φ = 5816448.

The previous prime is 13662527. The next prime is 13662557. The reversal of 13662544 is 44526631.

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, 21982 + ... + 22594.

It is an arithmetic number, because the mean of its divisors is an integer number (761360).

Almost surely, 2^13662544 is an apocalyptic number.

13662544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13662544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15227200).

13662544 is an abundant number, since it is smaller than the sum of its proper divisors (16791856).

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

13662544 is a wasteful number, since it uses less digits than its factorization.

13662544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 821 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 13662544 is about 3696.2878675774. The cubic root of 13662544 is about 239.0619868045.

The spelling of 13662544 in words is "thirteen million, six hundred sixty-two thousand, five hundred forty-four".