13351240 has 64 divisors (see below), whose sum is σ = 35199360. Its totient is φ = 4462080.

The previous prime is 13351229. The next prime is 13351241. The reversal of 13351240 is 4215331.

13351240 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

13351240 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (13351241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10899 + ... + 12061.

It is an arithmetic number, because the mean of its divisors is an integer number (549990).

Almost surely, 2^13351240 is an apocalyptic number.

13351240 is a gapful number since it is divisible by the number (10) 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 13351240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17599680).

13351240 is an abundant number, since it is smaller than the sum of its proper divisors (21848120).

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

13351240 is a wasteful number, since it uses less digits than its factorization.

13351240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13351240 is about 3653.9348653199. The cubic root of 13351240 is about 237.2323263180.

Adding to 13351240 its reverse (4215331), we get a palindrome (17566571).

The spelling of 13351240 in words is "thirteen million, three hundred fifty-one thousand, two hundred forty".