13312544 has 48 divisors (see below), whose sum is σ = 30296448. Its totient is φ = 5640192.

The previous prime is 13312529. The next prime is 13312553. The reversal of 13312544 is 44521331.

It is a nialpdrome in base 16.

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, 22784 + ... + 23360.

It is an arithmetic number, because the mean of its divisors is an integer number (631176).

Almost surely, 2^13312544 is an apocalyptic number.

13312544 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 13312544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15148224).

13312544 is an abundant number, since it is smaller than the sum of its proper divisors (16983904).

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

13312544 is a wasteful number, since it uses less digits than its factorization.

13312544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 689 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 13312544 is about 3648.6359094873. The cubic root of 13312544 is about 237.0029137897.

Adding to 13312544 its reverse (44521331), we get a palindrome (57833875).

The spelling of 13312544 in words is "thirteen million, three hundred twelve thousand, five hundred forty-four".