13317240 has 32 divisors (see below), whose sum is σ = 39952080. Its totient is φ = 3551232.

The previous prime is 13317217. The next prime is 13317277. The reversal of 13317240 is 4271331.

13317240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 55369 + ... + 55608.

Almost surely, 2^13317240 is an apocalyptic number.

13317240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13317240 is an abundant number, since it is smaller than the sum of its proper divisors (26634840).

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

13317240 is a wasteful number, since it uses less digits than its factorization.

13317240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110991 (or 110987 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 13317240 is about 3649.2793809189. The cubic root of 13317240 is about 237.0307781068.

Adding to 13317240 its reverse (4271331), we get a palindrome (17588571).

The spelling of 13317240 in words is "thirteen million, three hundred seventeen thousand, two hundred forty".