13210240 has 32 divisors (see below), whose sum is σ = 31582260. Its totient is φ = 5283840.

The previous prime is 13210237. The next prime is 13210273. The reversal of 13210240 is 4201231.

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 876096 = 3512^2 + 936^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 13210240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9681 + ... + 10960.

Almost surely, 2^13210240 is an apocalyptic number.

13210240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13210240 is an abundant number, since it is smaller than the sum of its proper divisors (18372020).

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

13210240 is an equidigital number, since it uses as much as digits as its factorization.

13210240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20660 (or 20648 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 13210240 is about 3634.5893853364. The cubic root of 13210240 is about 236.3942467080.

Adding to 13210240 its reverse (4201231), we get a palindrome (17411471).

Subtracting from 13210240 its reverse (4201231), we obtain a palindrome (9009009).

The spelling of 13210240 in words is "thirteen million, two hundred ten thousand, two hundred forty".