13306840 has 32 divisors (see below), whose sum is σ = 31518000. Its totient is φ = 5042304.

The previous prime is 13306819. The next prime is 13306847. The reversal of 13306840 is 4860331.

13306840 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 not an unprimeable number, because it can be changed into a prime (13306847) 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, 7995 + ... + 9514.

Almost surely, 2^13306840 is an apocalyptic number.

13306840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13306840 is an abundant number, since it is smaller than the sum of its proper divisors (18211160).

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

13306840 is a wasteful number, since it uses less digits than its factorization.

13306840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17539 (or 17535 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13306840 is about 3647.8541637516. The cubic root of 13306840 is about 236.9690595606.

The spelling of 13306840 in words is "thirteen million, three hundred six thousand, eight hundred forty".