13387724 has 24 divisors (see below), whose sum is σ = 26853120. Its totient is φ = 5720976.

The previous prime is 13387711. The next prime is 13387727. The reversal of 13387724 is 42778331.

13387724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13387727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17747 + ... + 18485.

It is an arithmetic number, because the mean of its divisors is an integer number (1118880).

Almost surely, 2^13387724 is an apocalyptic number.

13387724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13387724 is an abundant number, since it is smaller than the sum of its proper divisors (13465396).

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

13387724 is a wasteful number, since it uses less digits than its factorization.

13387724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397 (or 1395 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 13387724 is about 3658.9238855161. The cubic root of 13387724 is about 237.4482191822.

The spelling of 13387724 in words is "thirteen million, three hundred eighty-seven thousand, seven hundred twenty-four".