13086840 has 64 divisors (see below), whose sum is σ = 42285600. Its totient is φ = 3220992.

The previous prime is 13086811. The next prime is 13086841. The reversal of 13086840 is 4868031.

It is a happy number.

13086840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13086798 and 13086807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13086841) 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, 2635 + ... + 5754.

Almost surely, 2^13086840 is an apocalyptic number.

13086840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13086840 is an abundant number, since it is smaller than the sum of its proper divisors (29198760).

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

13086840 is a wasteful number, since it uses less digits than its factorization.

13086840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416 (or 8412 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 13086840 is about 3617.5737725719. The cubic root of 13086840 is about 235.6558711343.

The spelling of 13086840 in words is "thirteen million, eighty-six thousand, eight hundred forty".