13360640 has 80 divisors (see below), whose sum is σ = 34029072. Its totient is φ = 5013504.

The previous prime is 13360637. The next prime is 13360649. The reversal of 13360640 is 4606331.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13360649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43367 + ... + 43673.

Almost surely, 2^13360640 is an apocalyptic number.

13360640 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 13360640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17014536).

13360640 is an abundant number, since it is smaller than the sum of its proper divisors (20668432).

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

13360640 is an equidigital number, since it uses as much as digits as its factorization.

13360640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 13360640 is about 3655.2209235558. The cubic root of 13360640 is about 237.2879880825.

Adding to 13360640 its reverse (4606331), we get a palindrome (17966971).

The spelling of 13360640 in words is "thirteen million, three hundred sixty thousand, six hundred forty".