13086720 has 156 divisors (see below), whose sum is σ = 46000656. Its totient is φ = 3440640.

The previous prime is 13086713. The next prime is 13086737. The reversal of 13086720 is 2768031.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184285 + ... + 184355.

It is an arithmetic number, because the mean of its divisors is an integer number (294876).

Almost surely, 2^13086720 is an apocalyptic number.

13086720 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 13086720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23000328).

13086720 is an abundant number, since it is smaller than the sum of its proper divisors (32913936).

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

13086720 is an equidigital number, since it uses as much as digits as its factorization.

13086720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13086720 is about 3617.5571868320. The cubic root of 13086720 is about 235.6551508486.

The spelling of 13086720 in words is "thirteen million, eighty-six thousand, seven hundred twenty".